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Florida Institute of Technology

2017

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St. Lucie Shoal Complex: Regional Sediment Resource Or Submerged Storm Breakwater, Leaf Erickson Dec 2017

St. Lucie Shoal Complex: Regional Sediment Resource Or Submerged Storm Breakwater, Leaf Erickson

Theses and Dissertations

Nearshore sand shoals have become the predominant sediment resource for beach nourishment projects on the east coast of Florida. Along this coast, the St. Lucie Shoal Complex (SLSC) is comprised of several shoals designated as sediment resources for beach nourishment, many having depths less than 7 meters, at their crests. This group of shoals represents the largest high-quality beach nourishment sediment resource in southeast Florida. Among these shoals, the St. Lucie shoal is the largest and shallowest at the crest. This project explores the current best practice methodologies to explore impacts of excavating sand resources from shallow-crested shoal systems like …


A Validation Study Of The Cross Cultural Competenc E Navigator, Xiaowen Chen Dec 2017

A Validation Study Of The Cross Cultural Competenc E Navigator, Xiaowen Chen

Theses and Dissertations

C ross cultural competency (3C) is defined as an individual’s capability to effectively function in culturally diverse contexts, which is influenced by a set of individual antecedents. In the literature 3C has been characterized by a number of models and associated measures. In this thesis, 3C capability was described by seven distinctive antecedents, i.e. mindfulness, inquisitiveness, interpersonal skills, emotional stability, cultural knowledge, cultural experience and foreign language. A pragmatic 3C model was presented based on the literature findings, detailing the underlying mechanisms of 3C and its potential nomological network. The model attempted to reconcile three major disagreements in 3C research, …


Efficiency Analysis And Optimization Of Light Trapping In Amorphous Silicon Heterojunction Solar Cell With Lumerical Fdtd/Device, Muhammad Riaz Dec 2017

Efficiency Analysis And Optimization Of Light Trapping In Amorphous Silicon Heterojunction Solar Cell With Lumerical Fdtd/Device, Muhammad Riaz

Theses and Dissertations

This study investigated the two-dimensional computer analysis of a tandem solar cell: c-Si/a-Si:H/µc-SiGe, with Lumerical FDTD/DEVICE 4.6. Optical characterization was performed in FDTD and then the total generation rate was transported into DEVICE for electrical characterization. Electrical characterization of the solar cell was carried out in DEVICE. In the first stage, a single junction solar cell was studied with both a-Si and µc-SiGe, respectively, as its absorbing layers. The thickness for both layers was kept the same. For the a-Si absorbing layer Jsc = 10.959 mA/cm2 , Voc = 696.97 mV, FF = 78.985%, and η = 6.033% were achieved. …


A Comparative Study Of Discovery Learning Scientific Community Laboratories And Traditional Laboratories In Physics At An Independent University, Florida, U. S., Muhammad Riaz Dec 2017

A Comparative Study Of Discovery Learning Scientific Community Laboratories And Traditional Laboratories In Physics At An Independent University, Florida, U. S., Muhammad Riaz

Theses and Dissertations

This study investigated the effects of two instructional approaches – Discovery Learning Scientific Community Laboratories (DL-SCL; Treatment) and non-DLSCL laboratories (Control) – on students’ conceptual understanding, epistemological views, and academic achievement in a Physics-1 lab. Conceptual understanding was measured pre/post using the Mechanics Baseline Test (MBT) and the Force Concept Inventory (FCI). Epistemological views were measured pre/post using the E-CLASS (Zwickl et al., 2014). Lab scores and final exam scores served as measures of academic achievement. This study used a quasi-experimental study design with mixed-methods data collection and analysis procedures. Sections of a Physics-1 Lab course in Fall 2016 were …


Effective Parental Cooperation And Communication As Protective Factors For Adult Offspring Of Divorce, Damla Til Ogut Dec 2017

Effective Parental Cooperation And Communication As Protective Factors For Adult Offspring Of Divorce, Damla Til Ogut

Theses and Dissertations

Research and society have focused attention on how divorce affects family dynamics for decades. The clinical literature points to significant discrepancies in psychological variables between offspring from divorced versus intact families, suggesting that divorce contributes to negative psychosocial outcomes. Accordingly, investigations have revealed the adverse effects of co-parental conflict and antagonistic communication on divorce offspring’s psychological outcomes. Although parental cooperation and communication are suggested to serve as protective factors, more research is needed, given the current literature’s reliance on measures of psychopathology, yet making conclusions on psychological wellness. Among 244 college students, results indicated that divorce offspring reported lower levels …


High Volume Test Automation With Yeager, Casey Doran Dec 2017

High Volume Test Automation With Yeager, Casey Doran

Theses and Dissertations

High Volume Automated Testing is a powerful family of software testing techniques which enable a variety of testing goals, including the discovery of hard-to-reproduce bugs, which can enable new levels of quality assurance when applied correctly. This thesis presents a software tool, Yeager, which may be used in conjunction with existing test code to execute tests similar to Long Sequence Regression Tests based on an inferred state-model of the system under test as provided by tester annotations of state transitions caused by individual test code snippets. The usefulness of the package is evaluated through the development and deployment of a …


Temporal Transformation Of Barrier Islands A Round Nakdong Estuary, Sukzun Youn Dec 2017

Temporal Transformation Of Barrier Islands A Round Nakdong Estuary, Sukzun Youn

Theses and Dissertations

The Nakdong Estuary system near Busan, South Korea consists of dynamic shorelines characterized by morphological transformations that result from both natural disasters (typhoons and flooding) and construction projects (Nakdong Estuary Dam, gates in the West Nakdong River and Busan New-ports). This study aims to synthesize existing data for tides, waves, bathymetry and meteorological data obtained from a variety of institutions with the objectives of (1) identifying and ranking major factors that influence morphological transformations and (2) determining how these factors influence morphological change over time. These objectives were met by analyzing patterns of flow and sediment transport using Center Point …


Evaluation Of A Tool To Identify The Variables Responsible For Poor Parent Treatment Implementation: The Performance Diagnostic Checklist-Parent, Jamie Villacorta Dec 2017

Evaluation Of A Tool To Identify The Variables Responsible For Poor Parent Treatment Implementation: The Performance Diagnostic Checklist-Parent, Jamie Villacorta

Theses and Dissertations

In applied behavior analysis, parents are often taught to implement treatment programs in order to decrease their child’s problem behaviors and increase appropriate behaviors. Unfortunately, many parents have trouble implementing these programs correctly. It has been suggested that higher treatment integrity for a specified treatment program may be associated with higher levels of its success. The purpose of the present study was to evaluate the use of an assessment tool (i.e., the Performance Diagnostic Checklist-Parent, or PDC-P) to develop a treatment specifically targeted to address the variables responsible for poor program implementation by parents. First, the PDC-P was administered to …


Effects Of Cultural Factors In Sports-Related Concussion Testing Performance Of Collegiate Athletes, Gabriela Andrea González Torres Dec 2017

Effects Of Cultural Factors In Sports-Related Concussion Testing Performance Of Collegiate Athletes, Gabriela Andrea González Torres

Theses and Dissertations

The purpose of the current study was to explore potential differences in preseason baseline concussion testing between an ethnically and linguistically diverse sample of Division 2 NCAA collegiate student-athletes. A value-added second aim was to create awareness regarding the implications of multiculturalism as it relates to neuropsychological testing of sport related concussions. This study is part of a, slow yet steady, growing body of research concerning diversity issues within the sport setting. 479 Division II collegiate athletes from the Florida Institute of Technology were assessed during mandatory preseason baseline testing. The Immediate Post-Concussion Assessment and Cognitive Testing, the Sports Concussion …


The Gritty Black Single Mother: Protective Factors And The Influence Of Black Single Mother’S Grit On Young Adult Outcomes, Keara Cherrell Washington Dec 2017

The Gritty Black Single Mother: Protective Factors And The Influence Of Black Single Mother’S Grit On Young Adult Outcomes, Keara Cherrell Washington

Theses and Dissertations

Over the span of decades, literature has highlighted that offspring from Black Single Maternal Caregiver Households (BSMCH) will experience negative outcomes, including academic deficits and psychological distress, as a function of the adversarial barriers (i.e. low socioeconomic status, mother’s lack of educational attainment, and ecological threats) encountered within their environment. Despite the apparent potential negative outcomes, there are numerous examples of Black offspring from BSMCH who are resilient and successful, despite dire familial circumstances. However, their stories do not appear to be reflected in the literature. The purpose of this study was to reveal the untold story of resilient Black …


Substance Abuse And Other Factors That Influence Recidivism For Mental Health Court Graduates, Justine Maria Swanson Dec 2017

Substance Abuse And Other Factors That Influence Recidivism For Mental Health Court Graduates, Justine Maria Swanson

Theses and Dissertations

Mental health courts (MHC) were designed to divert the overwhelming number of individuals with mental illness involved in the criminal justice system from incarceration through specialty court proceedings intended to meet their unique needs. Individuals who have both mental health problems and substance use are at a disadvantage. For them, this combination contributes to more severe mental health symptoms, physical health issues, interpersonal challenges, and legal problems. The co-occurrence of mental illness and substance use is increasing in prevalence within both the community and justice system settings; however, few studies have explored the effectiveness of MHCs for this specific population …


Sensitivity Of Facial Organs Of Pythons As Deduced By Radiation Heat Transfer Analysis Under Varying Environmental Conditions, Rama Wairagkar Dec 2017

Sensitivity Of Facial Organs Of Pythons As Deduced By Radiation Heat Transfer Analysis Under Varying Environmental Conditions, Rama Wairagkar

Theses and Dissertations

Predicting the behavior of snakes has been an interest to several scientists for the last few decades. Even though considerable amount of research has been carried out pertaining to snakes, there remains a degree of curiosity regarding their striking ability, live prey detection at locations where visual clues are unobtainable, thermosensation and the phenomena that drives these conducts. Researches carried out so far have moderately disregarded the perception of sensitivity of facial pits of snakes and its characteristics under contrasting temperature domains. This thesis attempts to undertake a computational analysis of the sensitivity of facial pits of Burmese pythons under …


The Growth, Structure, And Dynamics Of Crime In Cities, Marcos Oliveira Dec 2017

The Growth, Structure, And Dynamics Of Crime In Cities, Marcos Oliveira

Theses and Dissertations

Crime is ubiquitous in cities but lacks a statistical characterization that could lead to uncovering its underlying mechanisms. Cities are, however, in a constant process of organization making difficult to analyze urban phenomena. Yet, to understand urbanization and its consequences, we need to approach cities as evolving processes, instead of static objects. With this perspective, we examined regularities in crime regarding its growth, structure, and dynamics. We developed frameworks to examine the spatial, temporal, and periodic variations of crime in cities. Though thefts increase super-linearly with the population, we found burglaries showing a linear increase. Our analyses also confirmed crime …


Surface Modification Of Core-Shell Silver-Titania Nanocomposites With Copper Bipyridine–Phosphonates And Studies On Ag@Tio₂ Mediated Degradation Of Organophosphates, Somayeh Talebzadeh Farooji Dec 2017

Surface Modification Of Core-Shell Silver-Titania Nanocomposites With Copper Bipyridine–Phosphonates And Studies On Ag@Tio₂ Mediated Degradation Of Organophosphates, Somayeh Talebzadeh Farooji

Theses and Dissertations

Silver nanoparticles, coated with a titania shell were prepared and were shown to be catalytically active for the rapid degradation of organothiophosphate methyl parathion (MeP). Formation of the degradation product, p-nitrophenolate (PNP) was monitored as a function of pH, using UV-Vis spectroscopy, and 31P NMR spectroscopy confirmed the hydrolysis is the predominant pathway for substrate breakdown under non-photocatalytic degradation. We have demonstrated that the unique combination of TiO2 and silver nanoparticles is required for catalytic hydrolysis with good reproducibility. This work represents the first example of MeP degradation using TiO2 doped with AgNP under mild and ambient conditions. It is …


5-Oxo-Ete Antagonists In Allergic Disease; Design And Synthesis Of Affinity Chromatography Ligand For 5-Hedh; And Synthesis Of Isoprostanes As An Index For The Diagnosis In Alzheimer’S Disease, Qiuji Ye Dec 2017

5-Oxo-Ete Antagonists In Allergic Disease; Design And Synthesis Of Affinity Chromatography Ligand For 5-Hedh; And Synthesis Of Isoprostanes As An Index For The Diagnosis In Alzheimer’S Disease, Qiuji Ye

Theses and Dissertations

Arachidonic acid (AA, 4, Figure 1) is a 20:4 (ω-6) fatty acid with a 20-carbon chain and four cis-double bonds, and the esterified form of AA in phospholipids can be enzymatically liberated by phospholipases (PL) and subsequently metabolized into a variety of physiologically important mediators known as eicosanoids (Figure 2). One of the most important eicosanoids is 5-oxo-6,8,11,14-eicosatetraenoic acid (5-oxo-ETE, 17). The 5-oxo-ETE (17) is the most known potent chemotactic factors for human eosinophils, and it can stimulate the late-phase asthma attacks.¹ To determine how the biosynthesis of 5-oxo-ETE is regulated, so as to determine its pathophysiological roles in the …


Information Densification Of Social Constructs Via Behavior Analysis Of Social Media Users – A Study On Twitter, Diogo F. Pacheco Dec 2017

Information Densification Of Social Constructs Via Behavior Analysis Of Social Media Users – A Study On Twitter, Diogo F. Pacheco

Theses and Dissertations

We live in a digital era where everyday activities are increasingly being replaced by online interactions. In addition, technology advances and data availability are changing the way we expand our knowledge about ourselves, society, and the environment. The increasing availability of data, especially social media data, has called the attention of researchers, and we have been witnessing an outbreak in studies relying on this rich source of information. However, most social media research is tuned to improve the outcomes of specific problems. Therefore, the reuse of techniques used in different areas is limited to data specialists. We propose a straightforward …


Managed Containers For Increased Cyber-Resilience, Xavier J. Merino Aguilera Dec 2017

Managed Containers For Increased Cyber-Resilience, Xavier J. Merino Aguilera

Theses and Dissertations

Traditional defense mechanisms are no longer adequate in protecting critical infrastructure and mission critical systems. These systems require to be always-on-always-connected. High availability and data integrity become crucial to deliver their mission. Unable to guarantee uncompromisable security and given that systems will inevitably be attacked, we must change our goals to guarantee mission survivability, the ability of the system to fight through the attack. Previous work has been done to increase availability and integrity using virtual machines. We move away from virtual machines towards Linux containers and implement resiliency strategies to guarantee stateful system recovery after an attack. The goal …


Flight Testing Angle-Of-Attack Warning Combinations On Part 23 Aircraft, Jennifer Grey Geehan Dec 2017

Flight Testing Angle-Of-Attack Warning Combinations On Part 23 Aircraft, Jennifer Grey Geehan

Theses and Dissertations

The high number of accidents involving General Aviation (GA) aircraft leads to a need for improved methods to warn pilots of high angles of attack (AOA) and impending stall. Such methods must be certified by the Federal Aviation Administration (FAA) under Federal Aviation Regulations Part 23 regarding their effectiveness in preventing departures from controlled flight. Therefore, methods of compliance must be developed to certify Part 23 aircraft equipped with AOA warning or limiting systems. The research objectives were to (a) determine methods for the evaluation of AOA warning and limiting systems and to (b) evaluate the effectiveness of baseline combinations …


Mining Location And User Information From Users’ Trajectories, Marcello Tomasini Dec 2017

Mining Location And User Information From Users’ Trajectories, Marcello Tomasini

Theses and Dissertations

The understanding of human mobility is integral to the advancement of many fields including public health, city planning, economic forecasting, and it attracts the interest of researchers from a broad number of fields. The work of such researchers would not have been possible without the availability of large localized datasets such as mobile phone Call Detail Records (CDRs) provided by telco operators and Location Based Social Networks (LBSNs) check-ins provided by popular applications such as Twitter, Facebook and Foursquare. However, such datasets are often incomplete, anonymized, and/or inaccurate. Hence there is a need to partially reconstruct or extract more information …


Testing The Wind-Shock Paradigm For B-Type Star X-Ray Production With Θ Carinae, Trisha F. Doyle Dec 2017

Testing The Wind-Shock Paradigm For B-Type Star X-Ray Production With Θ Carinae, Trisha F. Doyle

Theses and Dissertations

We present Chandra X-ray grating spectroscopy of the B0.2V star, θ Carinae. θ Car is in a critical transition region between the latest O-type and earliest B-type stars, where some of these stars are observed to have UV-determined mass-loss rates much lower than theoretically expected. In general, X-ray emission in this low-luminosity regime should be less prominent than in O-star winds, but observations have shown a higher than expected production of X-ray emission from the winds of these stars (e.g., Cohen et al. 2008; Huenemoerder et al. 2012). A hot wind could explain weak UV wind signatures, but this severely …


Comparison Of Reference Signal Received Power Measurements Between Cell Phone And Scanning Receiver In Lte, Sahin Gullu Dec 2017

Comparison Of Reference Signal Received Power Measurements Between Cell Phone And Scanning Receiver In Lte, Sahin Gullu

Theses and Dissertations

In cellular technology, before giving service to customers, coverage estimation, network optimization, and maintenance rely on RSRP (Received Signal Reference Power) measurements that are collected in a given area. This measurement collection is called “drive test or drive testing” that is very common practical experiment for RF engineers. These measurements are usually recorded by a professional receiver or a professional phone with appropriate software and license. A scanning receiver, PCTEL SeeGull EX scanning Receiver in this thesis, is a common professional tool for RF engineers to collect data. A cell phone, HTC One M7 for this experiment, has an appropriate …


Decision Support For Shared Responsibility Of Cloud Security Metrics, Moteeb Aieed Al Moteri Dec 2017

Decision Support For Shared Responsibility Of Cloud Security Metrics, Moteeb Aieed Al Moteri

Theses and Dissertations

With the rapid growth of cloud computing and the increasing importance of measuring the security of cloud systems, more attention has been focused on the need for security metrics that are specific to cloud computing. The use of metrics in cloud computing enables improved service selection, service agreement, and service verification. This dissertation presents a taxonomy of cloud security metrics and guideline and a framework for allocating cloud security metrics shared responsibility. The taxonomy considers several novel viewpoints. Metrics are organized by cloud capability type (Application, Platform, Infrastructure) along with the type of cloud deployment (public, private, hybrid, community), and …


On Logconcavity Of Multivariate Discrete Distributions, Majed Ghazi Alharbi Dec 2017

On Logconcavity Of Multivariate Discrete Distributions, Majed Ghazi Alharbi

Theses and Dissertations

The contribution of this dissertation to the literature is twofold. First, we use a geometric perspective to present all possible subdivisions of R³ into tetrahedra with disjoint interiors and adopt a combinatorial approach to obtain a special subdivision of Rⁿ into simplices with disjoint interiors, where two simplices are called neighbors if they share a common facet. We then use the neighborhood relationship of the simplices in each subdivision to fully describe the sufficient conditions for the strong unimodality/logconcavity of the trivariate discrete distributions and further extend these results to present a new sufcient condition for the strong unimodality/logconcavity of …


Copper Tolerance Of Amphibalanus Amphitrite As Observed In Central Florida, Hannah Grace Brinson Dec 2017

Copper Tolerance Of Amphibalanus Amphitrite As Observed In Central Florida, Hannah Grace Brinson

Theses and Dissertations

Copper tolerance in the invasive barnacle Amphibalanus amphitrite has been observed in Florida by the Center for Corrosion and Biofouling Control since 2012 and by Weiss (1947). To test the theory that this barnacle preferentially settles on copper coated surfaces to avoid settlement competition by other sessile species, a series of two experiments and a literature review of historical copper toxicity tests on larval barnacles was conducted. The barnacle A amphitrite was preferentially used in many previous toxicity studies because it is readily available, has high fecundity, and is more sensitive to some toxicants than other species, including the native …


Targeting The Bacterial Orisome In The Search For New Antibiotics, Julia E. Grimwade, Alan C. Leonard Nov 2017

Targeting The Bacterial Orisome In The Search For New Antibiotics, Julia E. Grimwade, Alan C. Leonard

Biomedical Engineering and Sciences Faculty Publications

There is an urgent need for new antibiotics to combat drug resistant bacteria. Existing antibiotics act on only a small number of proteins and pathways in bacterial cells, and it seems logical that expansion of the target set could lead to development of novel antimicrobial agents. One essential process, not yet exploited for antibiotic discovery, is the initiation stage of chromosome replication, mediated by the bacterial orisome. In all bacteria, orisomes assemble when the initiator protein, DnaA, as well as accessory proteins, bind to a DNA scaffold called the origin of replication (oriC). Orisomes perform the essential tasks of unwinding …


Not So Bad: Avoidance And Aversive Discounting Modulate Threat Appraisal In Anterior Cingulate And Medial Prefrontal Cortex, Michael W. Schlund, Adam T. Brewer, David M. Richman, Sandy K. Magee, Simon Dymond Nov 2017

Not So Bad: Avoidance And Aversive Discounting Modulate Threat Appraisal In Anterior Cingulate And Medial Prefrontal Cortex, Michael W. Schlund, Adam T. Brewer, David M. Richman, Sandy K. Magee, Simon Dymond

Psychology Faculty Publications

The dorsal anterior cingulate (adACC) and dorsal medial prefrontal cortex (dmPFC) play a central role in the discrimination and appraisal of threatening stimuli. Yet, little is known about what specific features of threatening situations recruit these regions and how avoidance may modulate appraisal and activation through prevention of aversive events. In this investigation, 30 healthy adults underwent functional neuroimaging while completing an avoidance task in which responses to an Avoidable CS+ threat prevented delivery of an aversive stimulus, but not to an Unavoidable CS+ threat. Extinction testing was also completed where CSs were presented without aversive stimulus delivery and an …


Search For Pair Production Of Vector-Like T And B Quarks In Single-Lepton Final States Using Boosted Jet Substructure In Proton-Proton Collisions At √S=13 Tev, Cms Collaboration, A. M. Sirunyan, A. Tumasyan, Marc M. Baarmand, Vallary Bhopatkar, Stefano Colafranceschi, Marcus Hohlmann, Daniel Noonan, Tuhin Roy, Francisco X. Yumiceva Nov 2017

Search For Pair Production Of Vector-Like T And B Quarks In Single-Lepton Final States Using Boosted Jet Substructure In Proton-Proton Collisions At √S=13 Tev, Cms Collaboration, A. M. Sirunyan, A. Tumasyan, Marc M. Baarmand, Vallary Bhopatkar, Stefano Colafranceschi, Marcus Hohlmann, Daniel Noonan, Tuhin Roy, Francisco X. Yumiceva

Aerospace, Physics, and Space Science Faculty Publications

A search for pair production of massive vector-like T and B quarks in proton-proton collisions at s=13" role="presentation" style="box-sizing: inherit; display: inline-block; line-height: normal; word-spacing: normal; overflow-wrap: normal; text-wrap: nowrap; float: none; direction: ltr; max-width: none; max-height: none; min-width: 0px; min-height: 0px; border: 0px; padding: 0px; margin: 0px; position: relative;">�=13 TeV is presented. The data set was collected in 2015 by the CMS experiment at the LHC and corresponds to an integrated luminosity of up to 2.6 fb−1. The T and B quarks are assumed to decay through three possible channels into a heavy boson (either a …


Age And Growth Of Bonefish, Albula Species Among Cuban Habitats, Jacob Joseph Rennert Nov 2017

Age And Growth Of Bonefish, Albula Species Among Cuban Habitats, Jacob Joseph Rennert

Theses and Dissertations

Bonefish (Albula spp.) are a prized sportfish among avid anglers worldwide. Two morphologically indistinguishable species of bonefish (Albula vulpes and Albula goreensis) exist in the circumtropical waters of the western Atlantic. A. vulpes grows faster and reaches larger sizes in the Florida Keys than in the Bahamas and other insular regions, but the mechanisms driving this variation have not been identified. Cuba supports large populations of bonefish, but their age, growth rate, and reproductive biology has not previously been examined. I obtained specimens from fish markets and local research staff in 3 regions around the periphery of Cuba from November …


Measurements Of Differential Cross Sections For Associated Production Of A W Boson And Jets In Proton-Proton Collisions At Square Root Of S = 8 Tev, A. M. Sirunyan, A. R. Tumasyan, W. Adam, Marc M. Baarmand, Vallary Bhopatkar, Stefano Colafranceschi, Marcus Hohlmann, Daniel Noonan, Tuhin S. Roy, Francisco X. Yumiceva Oct 2017

Measurements Of Differential Cross Sections For Associated Production Of A W Boson And Jets In Proton-Proton Collisions At Square Root Of S = 8 Tev, A. M. Sirunyan, A. R. Tumasyan, W. Adam, Marc M. Baarmand, Vallary Bhopatkar, Stefano Colafranceschi, Marcus Hohlmann, Daniel Noonan, Tuhin S. Roy, Francisco X. Yumiceva

Aerospace, Physics, and Space Science Faculty Publications

A measurement of the differential cross sections for a W boson produced in association with jets in the muon decay channel is presented. The measurement is based on 13 TeV proton-proton collision data corresponding to an integrated luminosity of 2.2 fb-1, recorded by the CMS detector at the LHC. The cross sections are reported as functions of jet multiplicity, jet transverse momentum pT, jet rapidity, the scalar pT sum of the jets, and angular correlations between the muon and each jet for different jet multiplicities. The measured cross sections are in agreement with predictions that include multileg leading-order (LO) and …


Measurement Of The B± Meson Nuclear Modification Factor In Pb-Pb Collisions At Snn =5.02 Tev, A. M. Sirunyam, A. R. Tumasyan, Adam Wolfgang, Marc M. Baarmand, Vallary Bhopatkar, Stefano Colafranceschi, Marcus Hohlmann, Daniel Noonan, Toohin S. Roy, Francisco X. Yumiceva Oct 2017

Measurement Of The B± Meson Nuclear Modification Factor In Pb-Pb Collisions At Snn =5.02 Tev, A. M. Sirunyam, A. R. Tumasyan, Adam Wolfgang, Marc M. Baarmand, Vallary Bhopatkar, Stefano Colafranceschi, Marcus Hohlmann, Daniel Noonan, Toohin S. Roy, Francisco X. Yumiceva

Aerospace, Physics, and Space Science Faculty Publications

The differential production cross sections of B± mesons are measured via the exclusive decay channels B±→J/ψK±→μ+μ-K± as a function of transverse momentum in pp and Pb-Pb collisions at a center-of-mass energy sNN=5.02 TeV per nucleon pair with the CMS detector at the LHC. The pp(Pb-Pb) data set used for this analysis corresponds to an integrated luminosity of 28.0 pb-1 (351 μb-1). The measurement is performed in the B± meson transverse momentum range of 7 to 50 GeV/c, in the rapidity interval |y|<2.4. In this kinematic range, a strong suppression of the production cross section by about a factor of 2 is observed in the Pb-Pb system in comparison to the expectation from pp reference data. These results are found to be roughly compatible with theoretical calculations incorporating beauty quark diffusion and energy loss in a quark-gluon plasma. © 2017 CERN, for the CMS Collaboration. Published by the American Physical Society under the terms of the «https://creativecommons.org/licenses/by/4.0/» Creative Commons Attribution 4.0 International license. Further distribution of this work must maintain attribution to the author(s) and the published article's title, journal citation, and DOI.