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2022

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Efficacy Of Transcranial Magnetic Stimulation In Treatment-Resistant Depression, Kemal Akpinar, Nalan Kalkan Oğuzhanoğlu, Tuğçe Toker Uğurlu Jan 2022

Efficacy Of Transcranial Magnetic Stimulation In Treatment-Resistant Depression, Kemal Akpinar, Nalan Kalkan Oğuzhanoğlu, Tuğçe Toker Uğurlu

Turkish Journal of Medical Sciences

Background/aim: The use of Transcranial Magnetic Stimulation (TMS) in the add-on treatment of patients with treatment-resistant depression (TRD) is becoming more common. This study aims to investigate the efficacy of TMS on depression and accompanying anxiety symptoms among patients with TRD. Materials and methods: The current study was conducted with 38 patients diagnosed with TRD. The patients were randomly divided into two groups and received 20 sessions of high-frequency (10Hz) TMS and 20 sessions of sham TMS to the left dorsolateral prefrontal cortex in a double-blind and cross-over fashion without a change in their pharmacotherapy. In the clinical evaluation, Hamilton …


The Lateralization Accuracy Of Inferior Petrosal Sinus Sampling In Cushing?S Disease: Experiences Of A Tertiary Center, Eli̇f Tutku Durmuş, Ayşegül Atmaca, Fati̇h Uzunkaya, Rami̇s Çolak, Buğra Durmuş Jan 2022

The Lateralization Accuracy Of Inferior Petrosal Sinus Sampling In Cushing?S Disease: Experiences Of A Tertiary Center, Eli̇f Tutku Durmuş, Ayşegül Atmaca, Fati̇h Uzunkaya, Rami̇s Çolak, Buğra Durmuş

Turkish Journal of Medical Sciences

Background/aim: The purpose of this study is to determine the accuracy of bilateral inferior petrosal sinus sampling (IPSS) in lateralization and to investigate variables associated with accurate IPSS lateralization prediction. Materials and methods: Initially, data from 55 patients who underwent IPSS in our institution were reviewed retrospectively. IPSS lateralization and pituitary magnetic resonance imaging (MRI) results of these patients were compared with postoperative follow-up and immunohistochemical data to calculate the positive predictive values (PPVs) for IPSS and MRI. Variables likely to be associated with the accurate prediction of IPSS lateralization were analyzed. Results: Twenty-seven patients (85.2% female, mean age of …


Using Electrooculography With Visual Stimulus Tracking Test In Diagnosing Of Adhd: Findings From Machine Learning Algorithms, Fatma Lati̇foğlu, Mustafa Yasi̇n Esas, Rami̇s İleri̇, Sevgi̇ Özmen, Esra Demi̇rci̇ Jan 2022

Using Electrooculography With Visual Stimulus Tracking Test In Diagnosing Of Adhd: Findings From Machine Learning Algorithms, Fatma Lati̇foğlu, Mustafa Yasi̇n Esas, Rami̇s İleri̇, Sevgi̇ Özmen, Esra Demi̇rci̇

Turkish Journal of Medical Sciences

Background/aim: Attention deficit hyperactivity disorder (ADHD), one of the most common neurodevelopmental disorders in childhood, is diagnosed clinically by assessing the symptoms of inattention, hyperactivity, and impulsivity. Also, there are limited objective assessment tools to support the diagnosis. Thus, in this study, a new electrooculography (EOG) based on visual stimulus tracking to support the diagnosis of ADHD was proposed. Materials and methods: Reference stimulus one-to-one tracking numbers (RSOT) and colour game detection (CGD) were applied to 53 medication-free children with ADHD and 36 healthy controls (HCs). Also, the test was applied six months after the treatment to children with ADHD. …


Evaluation Of The Effect Of Hyperchloremia On The Prognosis And Mortality Of Medical Intensive Care Patients: A Single-Center Study, Habi̇p Yilmaz, Başak Çakir Güney Jan 2022

Evaluation Of The Effect Of Hyperchloremia On The Prognosis And Mortality Of Medical Intensive Care Patients: A Single-Center Study, Habi̇p Yilmaz, Başak Çakir Güney

Turkish Journal of Medical Sciences

Background/aim: While chloride (Cl) is the most abundant anion in the serum, it is unfortunately one of the most commonly disregarded laboratory test results routinely drawn upon admission into the medical intensive care unit (MICU). We aimed to investigate the relation between in-hospital mortality, different pathologies requiring admission to the MICU, serum Cl levels, and other biochemical tests in a tertiary center. Materials and methods: The prospective study included data from 373 patients admitted to the ICU of a tertiary care center between 2017 and 2019. Data of patients under 18, pregnant patients or patients who were in the MICU …


Extremely High Erythrocyte Sedimentation Rate Revisited In Rheumatic Diseases: A Singlecenter Experience, Zehra Özsoy, Emre Bi̇lgi̇n, Melek Seren Aksun, İmdat Eroğlu, Umut Kalyoncu Jan 2022

Extremely High Erythrocyte Sedimentation Rate Revisited In Rheumatic Diseases: A Singlecenter Experience, Zehra Özsoy, Emre Bi̇lgi̇n, Melek Seren Aksun, İmdat Eroğlu, Umut Kalyoncu

Turkish Journal of Medical Sciences

Background/aim: The objectives were to define the distribution of rheumatic diseases in patients with erythrocyte sedimentation rate (ESR) ≥ 100 mm/h and to find variables that can differentiate main study groups from others. Materials and methods: Charts of patients admitted with ESR ≥ 100 mm/h between 2015 and 2020 were reviewed. Patients were divided into four diagnostic groups based on etiology: infection (without a rheumatic diagnosis), oncologic (without a rheumatic diagnosis), rheumatic, and no definitive diagnosis. Patients with the rheumatic diagnosis were divided into three main study groups: those who had been recently diagnosed with a rheumatic disease, those who …


Factors Affecting Patient-Acceptable Symptom States And Treatment Decision In Familial Mediterranean Fever, Derya Yildirim, İbrahi̇m Vasi̇, Erdi̇ Tahta, Riza Can Kardaş, Burcugül Özkiziltaş, Hami̇t Küçük, Mehmet Aki̇f Öztürk, Şemi̇nur Haznedaroğlu, Berna Göker, Abdurrahman Tufan Jan 2022

Factors Affecting Patient-Acceptable Symptom States And Treatment Decision In Familial Mediterranean Fever, Derya Yildirim, İbrahi̇m Vasi̇, Erdi̇ Tahta, Riza Can Kardaş, Burcugül Özkiziltaş, Hami̇t Küçük, Mehmet Aki̇f Öztürk, Şemi̇nur Haznedaroğlu, Berna Göker, Abdurrahman Tufan

Turkish Journal of Medical Sciences

Background/aim: Familial Mediterranean fever [FMF] is the most common autoinflammatory disease characterized by inflammatory attacks of fever and polyserositis. Patients' quality of life is significantly affected due to recurrent excruciating pain attacks and complications. This study is performed to evaluate the parameters most affecting patients' satisfaction from treatment. Materials and methods: Three hundred and forty-six consecutive patients diagnosed with FMF were enrolled in this study. Current treatment, acute phase proteins, number, type, and severity of predominant attacks, absenteeism from work/school in the last three months were recorded, and the participants were asked whether they needed additional treatment to evaluate Patient …


Detection Method Of Intraoperative Awareness: A Randomized Comparative Study, Meltem Bektaş, Türkay Çakan, Pinar Kirdemi̇r, Meli̇s Engi̇n, Hülya Başar Jan 2022

Detection Method Of Intraoperative Awareness: A Randomized Comparative Study, Meltem Bektaş, Türkay Çakan, Pinar Kirdemi̇r, Meli̇s Engi̇n, Hülya Başar

Turkish Journal of Medical Sciences

Background/aim: The incidence of intraoperative awareness varies in a wide range in the literature. The reasons for these different results include the questioning method used and the questioning time. The goal of this study is to compare the effectiveness of different questioning methods and times used in intraoperative awareness research for detecting the incidence. Materials and methods: We recruited patients between the ages of 18-70 years, with normal cognitive functions and able to speak after general anesthesia to the study. The patients were randomly divided into two groups. In Group 1 we applied the modified Brice questionnaire in the first …


A “Totally, Acceptably Racist Environment”: Examining Anti-Black Racism In A School Of Social Work, Jenn M. Lilly, Jasmine Hillyer, Eboni Jaggers, Kayla Garnigan Jan 2022

A “Totally, Acceptably Racist Environment”: Examining Anti-Black Racism In A School Of Social Work, Jenn M. Lilly, Jasmine Hillyer, Eboni Jaggers, Kayla Garnigan

Social Service Faculty Publications

Social work education is considered an important venue for advancing the field’s commitment to anti-racism. This research employed collective auto- biographical methods within a Critical Race Theory framework to explore Black social work students’ experiences of anti-Black racism in the learning environment of a Predominantly White Institution. Data was analyzed through a collaborative, inductive approach. Analysis revealed four interrelated themes: 1) racial microaggressions directed at Black students; 2) the perceived complicity of school administration in maintaining a racist environment; 3) the harm that an anti-Black racist learning environment caused to Black students; and 4) a relational approach to challenging anti-Black …


‘A Learning Experience’: Disciplinary And Parenting Practices Among Native American Families, Catherine Mckinley, Hannah Knipp, Jenn M. Lilly Jan 2022

‘A Learning Experience’: Disciplinary And Parenting Practices Among Native American Families, Catherine Mckinley, Hannah Knipp, Jenn M. Lilly

Social Service Faculty Publications

Research indicates that effective disciplinary practices, such as offering praise and teaching acceptable versus non-acceptable behaviour, can act as protective factors against the social and behavioural health disparities experienced by Native Americans (NA). The purpose of this critical ethnographic study (n = 436 qualitative elder, adult, youth and professional participants) was to use the Framework of Historical Oppression, Resilience, and Transcendence (FHORT) to qualitatively examine participants' reported experiences of disciplinary practices. Thematic analysis of qualitative results indicated several approaches to disciplining children, which included the following themes: (a) Establishing Structure and Boundaries; (b) Taking Away Privileges and Rewarding Good Behavior; …


Civil Procedure: Pre-Trial & Trial, Amanda Sotak, Don Colleluori, Andrew C. Whitaker Jan 2022

Civil Procedure: Pre-Trial & Trial, Amanda Sotak, Don Colleluori, Andrew C. Whitaker

SMU Annual Texas Survey

No abstract provided.


Criminal Procedure: Confessions, Searches, And Seizures, Barbara Parker Hervey, Carson Guy, Alexander R. Comsudi Jan 2022

Criminal Procedure: Confessions, Searches, And Seizures, Barbara Parker Hervey, Carson Guy, Alexander R. Comsudi

SMU Annual Texas Survey

No abstract provided.


Survey Of Recent Mandamus Decisions Of The Texas Supreme Court, Douglas S. Lang Jan 2022

Survey Of Recent Mandamus Decisions Of The Texas Supreme Court, Douglas S. Lang

SMU Annual Texas Survey

No abstract provided.


Oil, Gas, And Mineral Law, Austin W. Brister Jan 2022

Oil, Gas, And Mineral Law, Austin W. Brister

SMU Annual Texas Survey

No abstract provided.


Professional Liability, Sven Stricker, Jordan Brownlow, Tania Sethi Jan 2022

Professional Liability, Sven Stricker, Jordan Brownlow, Tania Sethi

SMU Annual Texas Survey

No abstract provided.


Real Property, J. Richard White, Amanda Grainger Jan 2022

Real Property, J. Richard White, Amanda Grainger

SMU Annual Texas Survey

No abstract provided.


Wills & Trusts, Gerry W. Beyer Jan 2022

Wills & Trusts, Gerry W. Beyer

SMU Annual Texas Survey

No abstract provided.


Generals Of The Resistance: Multistate Actions And Nationwide Injunctions, Elysa M. Dishman Jan 2022

Generals Of The Resistance: Multistate Actions And Nationwide Injunctions, Elysa M. Dishman

Faculty Scholarship

State attorneys general (AGs) have become leaders of the political resistance against recent presidential administrations. They are suing the federal government with increasing frequency, seeking nationwide injunctions that thwart presidential priorities and shape national policies.


Nationwide injunctions have sparked considerable debate among jurists, scholars, and policymakers. However, the largely court-centric debate has overwhelmingly overlooked the role that state litigants and litigators play in shaping criticisms of the nationwide injunction. States and AGs have unique
attributes, advantages, and incentives that allow them to frequently seek and successfully secure nationwide injunctions. And these advantages are enhanced when states litigate together. Because states …


Delaware's Frontier, Matthew C. Jennejohn, D. Gordon Smith Jan 2022

Delaware's Frontier, Matthew C. Jennejohn, D. Gordon Smith

Faculty Scholarship

This essay, prepared for a symposium honoring Chief Justice Leo Strine, explores how institutional capacity limits the Delaware courts’ role in the U.S. economy. A decision theoretic approach is employed to delineate the boundaries of that role, with particular attention paid to recent arguments that Delaware's Caremark doctrine should be extended to ESG concerns. The essay views muscular expansion of Caremark to encompass stakeholder interests as misguided without significant investments in institutional capacity.


International Law: Corpus Linguistics And Ordinary Meaning, Eric Talbot Jensen, James Lee Rex Jan 2022

International Law: Corpus Linguistics And Ordinary Meaning, Eric Talbot Jensen, James Lee Rex

Faculty Scholarship

The application of corpus linguistics to clarify ambiguity or provide insight in legal interpretation is quickly gaining recognition within the United States, especially among the judiciary. However, very little has been done to assess its application to international law, particularly as a means of assisting international courts and tribunals. In the international legal system—where ambiguity inevitably arises from the great diversity of linguistic and cultural systems throughout the world—the norm for understanding contested terms within a treaty or agreement is to look for the “ordinary meaning to be given to the terms of the treaty in their context and in …


Teaching Income Inequality With Data-Driven Visualization, Sang T. Truong, Humberto Barreto Jan 2022

Teaching Income Inequality With Data-Driven Visualization, Sang T. Truong, Humberto Barreto

School of Business and Leadership Working Papers

The distribution of household income is a central concern in economics due to its strong influence on society’s well-being and social cohesion. Yet, non-expert audiences face serious obstacles in understanding conventional measures of inequality. To effectively communicate the extent of income inequality in the United States, we have developed a novel technique for visualizing income distribution and its dispersion over time by using U.S. household income microdata from the Current Population Survey. The result is a striking dynamic animation of income distribution over time, drawing public attention and encouraging further investigation of income inequality. Detailed implementation is available at https://github.com/sangttruong/incomevis. …


Optimal Shape Estimation And Methodologies For Towed Undersea Vehicles, Matthew J. Dellavalle, Peter Jasinski, Owen Driskill, Nick Sellers Jan 2022

Optimal Shape Estimation And Methodologies For Towed Undersea Vehicles, Matthew J. Dellavalle, Peter Jasinski, Owen Driskill, Nick Sellers

Mechanical Engineering Capstone Design Projects

Team 02 in part with Dr. Nassersharif, has been commissioned by the Naval Undersea Warfare Center to provide an optimal design and modeling for towed undersea vehicles. The proposed effort served to study, evaluate, and model the drag for the towing of cylindrical undersea vehicles. This project will model towing configurations for both single and multiple vehicle configurations. Recommendations were also made regarding the propulsion configuration of the leading vehicle. The proposed design solution aimed to achieve a drag coefficient of less than 0.3 to minimize the effect the towed vehicle may have on the range and endurance of its …


Western Herbalism: What Drives Individuals Within Rhode Island To Study This Ancient Healing Modality?, Kyla Shea Jan 2022

Western Herbalism: What Drives Individuals Within Rhode Island To Study This Ancient Healing Modality?, Kyla Shea

Student Publications

People globally rely on herbal practices as their main form of healing, yet few people in the West understand how to properly identify and effectively use herbs. This loss of knowledge regarding traditional healing practices was done so intentionally during enslavement and colonization, resulting in exploitation and misinterpretation of herbal practices. By reclaiming this knowledge, it is not only a way to improve the health of communities and the land, but it is also a way of reclaiming ancestral traditions and connection with oneself. Furthermore, this research paper explores the complexities of Western herbalism and determines what drives individuals within …


Bunch Length Measurements At The Cebaf Injector At 130 Kv, Sunil Pokharel, M. W. Bruker, J. M. Grames, A. S. Hofler, R. Kazimi, Geoffrey A. Krafft, S. Zhang Jan 2022

Bunch Length Measurements At The Cebaf Injector At 130 Kv, Sunil Pokharel, M. W. Bruker, J. M. Grames, A. S. Hofler, R. Kazimi, Geoffrey A. Krafft, S. Zhang

Physics Faculty Publications

In this work, we investigated the evolution in bunch length of beams through the CEBAF injector for low to high charge per bunch. Using the General Particle Tracer (GPT), we have simulated the beams through the beamline of the CEBAF injector and analyzed the beam to get the bunch lengths at the location of chopper. We performed these simulations with the existing injector using a 130 kV gun voltage. Finally, we describe measurements to validate these simulations. The measurements have been done using chopper scanning technique for two injector laser drive frequency modes: one with 500 MHz, and another with …


An Update To C12-21-004: Semi-Inclusive Deep Inelastic Scattering Measurements Of A = 3 Nuclei With Clas12 In Hall B, D. Gaskell, D. W. Higinbotham, C. Keith, C. Keppel, J. Maxwell, A. Tadepalli, D. Meekins, D. Nguyen, S. Stepanyan, H. Szumila-Vance, A. Denniston, O. Hen, J. Kahlbow, T. Kutz, J. R. Pybus, E. P. Segarra, C. Ayerbe-Gayoso, H. Bhatt, B. Devkota, J. Dunne, D. Dutta, L. El Fassi, A. Karki, M. Amarian, C. Fogler, F. Hauenstein, C. Hyde, G. Gavalian, L. B. Weinstein, S. Li, R. Cruz Torres, J. Rittenhouse West, Z. G. Xiao, Y. Wang, J. H. Xu, Z. H. Ye, Y. P. Zhang, K. Griffioen, P. Bosted, A. Bianconi, G. Costantini, M. Leali, S. Migliorati, L. Venturelli, V. Mascagna, A. Boyer, F. Benmokhtar, A. Gadsby, A. Parker, L. Baashen, B. Raue, W. J. Briscoe, S. Ratliff, A. Schmidt, E. Seroka, P. Sharp, P. G. Solazzo, I. I. Strakovsky, K. Adhikari, G. Niculescu, K.-T. Brinkmann, S. Diehl, A. Kripko, Sheren Alsalmi, Tyler J. Hague, A. Beck, S. Beck, E. Cohen, I. Korover, G. Johansson, C. Neuburger, E. Piasetzky, Michael Nycz, R. Capobianco, T. Haywars, F.-X. Girod, K. Joo, A. Kim, V. Klimenko, R. Santos, U. Shrestha, P. Simmerling, J. Richard, N. Trotta, B. Mckinnon, W. Brooks Jan 2022

An Update To C12-21-004: Semi-Inclusive Deep Inelastic Scattering Measurements Of A = 3 Nuclei With Clas12 In Hall B, D. Gaskell, D. W. Higinbotham, C. Keith, C. Keppel, J. Maxwell, A. Tadepalli, D. Meekins, D. Nguyen, S. Stepanyan, H. Szumila-Vance, A. Denniston, O. Hen, J. Kahlbow, T. Kutz, J. R. Pybus, E. P. Segarra, C. Ayerbe-Gayoso, H. Bhatt, B. Devkota, J. Dunne, D. Dutta, L. El Fassi, A. Karki, M. Amarian, C. Fogler, F. Hauenstein, C. Hyde, G. Gavalian, L. B. Weinstein, S. Li, R. Cruz Torres, J. Rittenhouse West, Z. G. Xiao, Y. Wang, J. H. Xu, Z. H. Ye, Y. P. Zhang, K. Griffioen, P. Bosted, A. Bianconi, G. Costantini, M. Leali, S. Migliorati, L. Venturelli, V. Mascagna, A. Boyer, F. Benmokhtar, A. Gadsby, A. Parker, L. Baashen, B. Raue, W. J. Briscoe, S. Ratliff, A. Schmidt, E. Seroka, P. Sharp, P. G. Solazzo, I. I. Strakovsky, K. Adhikari, G. Niculescu, K.-T. Brinkmann, S. Diehl, A. Kripko, Sheren Alsalmi, Tyler J. Hague, A. Beck, S. Beck, E. Cohen, I. Korover, G. Johansson, C. Neuburger, E. Piasetzky, Michael Nycz, R. Capobianco, T. Haywars, F.-X. Girod, K. Joo, A. Kim, V. Klimenko, R. Santos, U. Shrestha, P. Simmerling, J. Richard, N. Trotta, B. Mckinnon, W. Brooks

Physics Faculty Publications

We propose to measure precision ratios of charged pion electroproduction in 10.6 GeV Semi-Inclusive Deep Inelastic Scattering from ²D, ³He and ³H targets in CLAS12 over a wide range of xB to test the flavor dependence of the EMC effect in the valence quark region. This trio of targets minimizes hadron attenuation effects while maximizing nuclear asymmetry and takes advantage of the tritium target that will be developed for the approved quasi-elastic experiment E12-20-005 [1]. The experiment will focus on z = En/v ≥ 0.3 to maximize the connection between the struck quark and the detected π±. Double ratios of …


Question 1: Snow Volume; Question 2: Longbow Arrow Velocity, Larry Weinstein Jan 2022

Question 1: Snow Volume; Question 2: Longbow Arrow Velocity, Larry Weinstein

Physics Faculty Publications

No abstract provided.


Transversity Parton Distribution Function Of The Nucleon Using The Pseudodistribution Approach, Colin Egerer, Christos Kallidonis, Joseph Karpie, Nikhil Karthik, Christopher J. Monahan, Wayne Morris, Kostas Orginos, Anatoly Radyushkin, Eloy Romero, Raza Sabbir Sufian, Savvas Zafeiropoulos, On Behalf Of The Hadstruc Collaboration Jan 2022

Transversity Parton Distribution Function Of The Nucleon Using The Pseudodistribution Approach, Colin Egerer, Christos Kallidonis, Joseph Karpie, Nikhil Karthik, Christopher J. Monahan, Wayne Morris, Kostas Orginos, Anatoly Radyushkin, Eloy Romero, Raza Sabbir Sufian, Savvas Zafeiropoulos, On Behalf Of The Hadstruc Collaboration

Physics Faculty Publications

We present a determination of the nonsinglet transversity parton distribution function (PDF) of the nucleon, normalized with respect to the tensor charge at μ2 ¼ 2 GeV2 from lattice quantum chromodynamics. We apply the pseudodistribution approach, using a gauge ensemble with a lattice spacing of 0.094 fm and the light quark mass tuned to a pion mass of 358 MeV. We extract the transversity PDF from the analysis of the short-distance behavior of the Ioffe-time pseudodistribution using the leading-twist nextto-leading order (NLO) matching coefficients calculated for transversity. We reconstruct the x-dependence of the transversity PDF through an expansion in a …


Polarized Gluon Pseudodistributions At Short Distances, Ian Balitsky, Wayne Morris, Anatoly Radyushkin Jan 2022

Polarized Gluon Pseudodistributions At Short Distances, Ian Balitsky, Wayne Morris, Anatoly Radyushkin

Physics Faculty Publications

We formulate the basic points of the pseudo-PDF approach to the lattice calculation of polarized gluon PDFs. We present the results of our calculations of the one-loop corrections for the bilocal Gμα(z)G̃λβ(0) correlator of gluonic fields. Expressions are given for a general situation when all four indices are arbitrary, and also for specific combinations of indices corresponding to three matrix elements that contain the twist-2 invariant amplitude related to the polarized PDF. We study the evolution properties of these matrix elements, and derive matching relations between Euclidean and light-cone Ioffe-time distributions. These relations are necessary for …


Unpolarized And Polarized Gluon Pseudo-Distributions At Short Distances: Forward Case, Ian Balitsky, Wayne Morris, Anatoly Radyushkin Jan 2022

Unpolarized And Polarized Gluon Pseudo-Distributions At Short Distances: Forward Case, Ian Balitsky, Wayne Morris, Anatoly Radyushkin

Physics Faculty Publications

We present the results that are necessary in the ongoing lattice calculations of the unpolarized and polarized gluon parton distribution functions (PDFs) within the pseudo-PDF approach. We give a classification of possible two-gluon correlator functions and identify those that contain the invariant amplitude determining the gluon PDF in the light-cone z2 → 0 limit. One-loop calculations have been performed in the coordinate representation and in an explicitly gauge-invariant form. We made an effort to separate ultraviolet (UV) and infrared (IR) sources of the ln(−z2)-dependence at short distances z2. The UV terms cancel in the reduced …


Quark Spin-Orbit Correlations In The Proton, M. Engelhardt, J. Green, N. Hasan, T. Izubuchi, C. Kallidonis, S. Krieg, S. Liuti, S. Meinel, J. Negele, A. Pochinsky, A. Rajan, G. Silvi, S. Syritsyn Jan 2022

Quark Spin-Orbit Correlations In The Proton, M. Engelhardt, J. Green, N. Hasan, T. Izubuchi, C. Kallidonis, S. Krieg, S. Liuti, S. Meinel, J. Negele, A. Pochinsky, A. Rajan, G. Silvi, S. Syritsyn

Physics Faculty Publications

Generalized transverse momentum-dependent parton distributions (GTMDs) provide a comprehensive framework for imaging the internal structure of the proton. In particular, by encoding the simultaneous distribution of quark transverse positions and momenta, they allow one to directly access longitudinal quark orbital angular momentum, and, moreover, to correlate it with the quark helicity. The relevant GTMD is evaluated through a lattice calculation of a proton matrix element of a quark bilocal operator (the separation in which is Fourier conjugate to the quark momentum) featuring a momentum transfer (which is Fourier conjugate to the quark position), as well as the Dirac structure appropriate …


Cebaf Injector Model For KL Beam Conditions, Sunil Pokharel, Geoffrey A. Krafft, A. S. Hofler, R. Kazimi, M. Bruker, J. Grames, S. Zhang Jan 2022

Cebaf Injector Model For KL Beam Conditions, Sunil Pokharel, Geoffrey A. Krafft, A. S. Hofler, R. Kazimi, M. Bruker, J. Grames, S. Zhang

Physics Faculty Publications

The Jefferson Lab KL experiment will run at the Continuous Electron Beam Accelerator Facility with a much lower bunch repetition rate (7.80 or 15.59 MHz) than nominally used (249.5 or 499 MHz). While the proposed average current of 2.5 - 5.0 µA is relatively low compared to the maximum CEBAF current of approximately 180 µA, the corresponding bunch charge is atypically high for CEBAF injector operation. In this work, we investigated the evolution and transmission of low-rep-rate, high-bunch-charge (0.32 to 0.64 pC) beams through the CEBAF injector. Using the commercial software General Particle Tracer, we have simulated and analyzed the …