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Luminosity With Large Amplitude Pulses After The Initial Breakdown Stage In Intracloud Lightning Flashes, Maribeth Stolzenburg, Thomas C. Marshall, Sampath Bandara, Raymond Siedlecki Apr 2022

Luminosity With Large Amplitude Pulses After The Initial Breakdown Stage In Intracloud Lightning Flashes, Maribeth Stolzenburg, Thomas C. Marshall, Sampath Bandara, Raymond Siedlecki

Faculty and Student Publications

Optical data are presented for two intracloud flashes in which there were five events having large amplitude, bipolar electric field change (E-change) pulses and strong VHF emissions. These bright events occurred 18.98–67.33 ms after the initiating event and 10–59 ms after the end of the initial breakdown stage. The three largest events were coincident with WorldWide Lightning Location Network detections of the sort previously associated with terrestrial gamma-ray flashes (TGFs); these pulses had range-normalized E-change amplitudes of 8.73, 8.33, and 3.81 V/m and estimated peak current magnitudes of 262, 250, and 114 kA. The other two events were 3.20 and …


Measurement Of The Branching Fraction And Cp Asymmetry For B → D ¯ 0Π Decays, T. Bloomfield, M. E. Sevior, I. Adachi, H. Aihara, S. Al Said, D. M. Asner, V. Aulchenko, T. Aushev, R. Ayad, V. Babu, S. Bahinipati, P. Behera, J. Bennett, M. Bessner, T. Bilka, J. Biswal, A. Bobrov, G. Bonvicini, A. Bozek Apr 2022

Measurement Of The Branching Fraction And Cp Asymmetry For B → D ¯ 0Π Decays, T. Bloomfield, M. E. Sevior, I. Adachi, H. Aihara, S. Al Said, D. M. Asner, V. Aulchenko, T. Aushev, R. Ayad, V. Babu, S. Bahinipati, P. Behera, J. Bennett, M. Bessner, T. Bilka, J. Biswal, A. Bobrov, G. Bonvicini, A. Bozek

Faculty and Student Publications

We measure the branching fractions and CP asymmetries for the decays B0→D¯0π0 and B+→D¯0π+, using a data sample of 772×106 BB¯ pairs collected at the (4S) resonance with the Belle detector at the KEKB e+e- collider. The branching fractions obtained and direct CP asymmetries are B(B0→D¯0π0)=[2.70±0.06(stat)±0.10(syst)]×10-4, B(B+→D¯0π+)=[4.53±0.02(stat)±0.15(syst)]×10-3, ACP(B0→D¯0π0)=[+0.42±2.05(stat)±1.22(syst)]%, and ACP(B+→D¯0π+)=[+0.19±0.36(stat)±0.57(syst)]%. The measurements of B are the most precise to date and are in good agreement with previous results, as is the measurement of ACP(B+→D¯0π+). The measurement of ACP for B0→D¯0π0 is the first for this mode, and the value is consistent with Standard Model expectations.


Engr 692 Section 66: Randomized Algorithms, Yixin Chen Apr 2022

Engr 692 Section 66: Randomized Algorithms, Yixin Chen

GMAS Course Syllabi

No abstract provided.


Math 672: Statistical Methods Ii, Dao Nguyen Apr 2022

Math 672: Statistical Methods Ii, Dao Nguyen

GMAS Course Syllabi

No abstract provided.


Math 777: Seminar In Statistics: Theoretical Foundations Of Neural Network Learning, Instructor: Hailin Sang Apr 2022

Math 777: Seminar In Statistics: Theoretical Foundations Of Neural Network Learning, Instructor: Hailin Sang

GMAS Course Syllabi

No abstract provided.


Phad 795: Special Topics: Principles Of Statistical Mediation And Moderation, John P. Bentley Ph.D. Apr 2022

Phad 795: Special Topics: Principles Of Statistical Mediation And Moderation, John P. Bentley Ph.D.

GMAS Course Syllabi

No abstract provided.


Three Um Students Named Goldwater Scholars, Staff Report Mar 2022

Three Um Students Named Goldwater Scholars, Staff Report

University of Mississippi News

Record-breaking class of honorees awarded for excellence in STEM studies and research


Faculty: Register For Artificial Intelligence Mini-Conference, Staff Report Mar 2022

Faculty: Register For Artificial Intelligence Mini-Conference, Staff Report

University of Mississippi News

No abstract provided.


Graduate Student Symposium Expands, Features Keynote By Noted Alumnus, Staff Report Mar 2022

Graduate Student Symposium Expands, Features Keynote By Noted Alumnus, Staff Report

University of Mississippi News

Event draws record number of entries; Forbes '30 Under 30' honoree Sly Spencer Lee shares secrets of success


Up For The Count, Edwin B. Smith Mar 2022

Up For The Count, Edwin B. Smith

University of Mississippi News

Mathematics professor Micah Milinovich receives NSF funding for number theory research


Scholarship Recipients Carry On Late Mba Student's Legacy, Sydney Gibson Mar 2022

Scholarship Recipients Carry On Late Mba Student's Legacy, Sydney Gibson

University of Mississippi News

Endowment honoring Zach McClendon has served students, young alumni well


Rebelthon 2022 Sets Record, Edwin B. Smith Mar 2022

Rebelthon 2022 Sets Record, Edwin B. Smith

University of Mississippi News

Fundraiser for Children's of Mississippi Hospital attracted most dancers in 10-year run


Valence-, Dipole-And Quadropole-Bound Electronically Excited States Of Closed-Shell Anions Formed By Deprotonation Of Cyano-And Ethynyl-Disubstituted Polycyclic Aromatic Hydrocarbons, Marie E. Strauss, Taylor J. Santaloci, Ryan C. Fortenberry Mar 2022

Valence-, Dipole-And Quadropole-Bound Electronically Excited States Of Closed-Shell Anions Formed By Deprotonation Of Cyano-And Ethynyl-Disubstituted Polycyclic Aromatic Hydrocarbons, Marie E. Strauss, Taylor J. Santaloci, Ryan C. Fortenberry

Faculty and Student Publications

Dicyano-functionalized benzene and naphthalene anion derivatives exhibit a relatively rich population of electronically excited states in stark contrast to many assumptions regarding the photophysics of anions in general. The present work has quantum chemically analyzed the potential electronically excited states of closed-shell anions created by replacing hydrogen atoms with valence-bound lone pairs in benzene and naphthalene difunctionalized with combinations of-CN and-C2H. Dicyanobenzene anion derivatives can exhibit dipole-bound excited states as long as the cyano groups are not in para position to one another. This also extends to cyanoethynylbenzene anions as well as deprotonated dicyano-and cyanoethynylnaphthalene anion derivatives. Diethynyl functionalization is …


Ultra-Broadband Bending Beam And Bottle Beam Based On Acoustic Metamaterials, Xudong Fan, Xiaolong Huang, Yang Kang, Can Li, Ning Li, Chunsheng Weng, Likun Zhang Mar 2022

Ultra-Broadband Bending Beam And Bottle Beam Based On Acoustic Metamaterials, Xudong Fan, Xiaolong Huang, Yang Kang, Can Li, Ning Li, Chunsheng Weng, Likun Zhang

Faculty and Student Publications

We report the realization of an ultra-broadband bending beam based on acoustic meta-materials by the theoretical prediction and the numerical validation. The proposed structure is composed of a series of straight tubes with spatially modulated depths. We analytically derive the depth profile required for the generation of an ultra-broadband bending beam, and examine the performance of the metastructure numerically. The design is then extended for the generation of a three-dimensional bottle beam. The transverse trapping behaviours on small rigid objects by the bottle beam are investigated based on the force potential. Our work will help the further study of broadband …


Search For B0 Meson Decays Into Λ And Missing Energy With A Hadronic Tagging Method At Belle, C. Hadjivasiliou, B. G. Fulsom, J. F. Strube, I. Adachi, H. Aihara, D. M. Asner, H. Atmacan, T. Aushev, V. Babu, K. Belous, J. Bennett, M. Bessner, V. Bhardwaj, B. Bhuyan, T. Bilka, J. Biswal, D. Bodrov, J. Borah, A. Bozek Mar 2022

Search For B0 Meson Decays Into Λ And Missing Energy With A Hadronic Tagging Method At Belle, C. Hadjivasiliou, B. G. Fulsom, J. F. Strube, I. Adachi, H. Aihara, D. M. Asner, H. Atmacan, T. Aushev, V. Babu, K. Belous, J. Bennett, M. Bessner, V. Bhardwaj, B. Bhuyan, T. Bilka, J. Biswal, D. Bodrov, J. Borah, A. Bozek

Faculty and Student Publications

We present a search for the decays of B0 mesons into a final state containing a Λ baryon and missing energy. These results are obtained from a 711 fb-1 data sample that contains 772×106 BB¯ pairs and was collected near the (4S) resonance with the Belle detector at the KEKB asymmetric-energy e+e- collider. We use events in which one B meson is fully reconstructed in a hadronic decay mode and require the remainder of the event to consist of only a single Λ. No evidence for these decays is found, and we set 90% confidence level upper limits on the …


Search For A Light Higgs Boson In Single-Photon Decays Of ϒ (1s) Using ϒ (2s) →Π+Π- ϒ (1s) Tagging Method, S. Jia, C. P. Shen, I. Adachi, H. Aihara, S. Al Said, D. M. Asner, H. Atmacan, T. Aushev, R. Ayad, V. Babu, P. Behera, K. Belous, J. Bennett, M. Bessner, V. Bhardwaj, B. Bhuyan, T. Bilka, A. Bobrov, D. Bodrov Feb 2022

Search For A Light Higgs Boson In Single-Photon Decays Of ϒ (1s) Using ϒ (2s) →Π+Π- ϒ (1s) Tagging Method, S. Jia, C. P. Shen, I. Adachi, H. Aihara, S. Al Said, D. M. Asner, H. Atmacan, T. Aushev, R. Ayad, V. Babu, P. Behera, K. Belous, J. Bennett, M. Bessner, V. Bhardwaj, B. Bhuyan, T. Bilka, A. Bobrov, D. Bodrov

Faculty and Student Publications

We search for a light Higgs boson (A0) decaying into a τ+τ- or μ+μ- pair in the radiative decays of ϒ(1S). The production of ϒ(1S) mesons is tagged by ϒ(2S)→π+π-ϒ(1S) transitions, using 158×106 ϒ(2S) events accumulated with the Belle detector at the KEKB asymmetric energy electron-positron collider. No significant A0 signals in the mass range from the τ+τ- or μ+μ- threshold to 9.2 GeV/c2 are observed. We set the upper limits at 90% credibility level (C.L.) on the product branching fractions for ϒ(1S)→γA0 and A0→τ+τ- varying from 3.8×10-6 to 1.5×10-4. Our results represent an approximately twofold improvement on the current …


Rebelthon To Hit Dance Floor This Weekend, Edwin B. Smith Feb 2022

Rebelthon To Hit Dance Floor This Weekend, Edwin B. Smith

University of Mississippi News

10th annual fundraiser for Children's Miracle Network hospital offers fun events for all


February 24, 2022, The Daily Mississippian Feb 2022

February 24, 2022, The Daily Mississippian

Daily Mississippian (all digitized issues)

No abstract provided.


Daniell Mattern Named Inaugural Stefani-Miller Chair, Edwin B. Smith Feb 2022

Daniell Mattern Named Inaugural Stefani-Miller Chair, Edwin B. Smith

University of Mississippi News

No abstract provided.


Three Um Students Named Truman Finalists, Michael Newsom Feb 2022

Three Um Students Named Truman Finalists, Michael Newsom

University of Mississippi News

Students who raise awareness about mental health issues and educational access among national finalists


February 17, 2022, The Daily Mississippian Feb 2022

February 17, 2022, The Daily Mississippian

Daily Mississippian (all digitized issues)

No abstract provided.


Um Legends To Reflect For Black History Month Keynote, J. B. Clark Feb 2022

Um Legends To Reflect For Black History Month Keynote, J. B. Clark

University of Mississippi News

Don Cole and Peggy Gillom-Granderson to discuss 50 years of struggles and successes


Secret Lives Of Middle-Aged Stars Topic For Hybrid Oxford Science Cafe, Edwin B. Smith Feb 2022

Secret Lives Of Middle-Aged Stars Topic For Hybrid Oxford Science Cafe, Edwin B. Smith

University of Mississippi News

Delta State professor to discuss life cycles, magnetism during Feb. 15 in-person/virtual event


Self-Serving Bias In Performance Goal Achievement Appraisals: Evidence From Long-Distance Runners, Moonsup Hyun, Wonsok F. Jee, Christine Wegner, Jeremy S. Jordan, James Du, Taeyeon Oh Feb 2022

Self-Serving Bias In Performance Goal Achievement Appraisals: Evidence From Long-Distance Runners, Moonsup Hyun, Wonsok F. Jee, Christine Wegner, Jeremy S. Jordan, James Du, Taeyeon Oh

Faculty and Student Publications

While working with a long-distance running event organizer, the authors of this study observed considerable differences between event participants’ official finish time (i.e., bib time) and their self-reported finish time in the post-event survey. Drawing on the notion of self-serving bias, we aim to explore the source of this disparity and how such psychological bias influences participants’ event experience at long-distance running events. Using evidence of 1,320 marathon runners, we demonstrated how people are more likely to be subject to a biased self-assessment contingent upon achieving their best finish time at the event. The study samples were split into record-high-achieved …


Um Names First Research Scholar For Institutional Transformation, Shea Stewart Feb 2022

Um Names First Research Scholar For Institutional Transformation, Shea Stewart

University of Mississippi News

Psychology professor Stephanie Miller appointed as first scholar to hold position


Corrected Tilt Calculation For Atmospheric Pressure-Induced Seismic Noise, Richard Raspet, Craig J. Hickey, Bipin Koirala Feb 2022

Corrected Tilt Calculation For Atmospheric Pressure-Induced Seismic Noise, Richard Raspet, Craig J. Hickey, Bipin Koirala

Faculty and Student Publications

In a literature search on the coupling of wind-generated pressure fluctuations into seismic noise, it was noticed that the expression for the angular tilt induced by pressure fluctuations in the seminal paper “A preliminary investigation into the relationship between long-period seismic noise and local fluctuations in the atmospheric pressure” by G. G. Sorrells was only valid at the surface. A search of the literature which cites the Sorrells paper was performed to see if any subsequent research corrected this error, and what effect the error might have on the research. A recent paper by Tanimoto and Wang notes the correct …


Supertranslations At Timelike Infinity, Sumanta Chakraborty, Debodirna Ghosh, Sk Jahanur Hoque, Aniket Khairnar, Amitabh Virmani Feb 2022

Supertranslations At Timelike Infinity, Sumanta Chakraborty, Debodirna Ghosh, Sk Jahanur Hoque, Aniket Khairnar, Amitabh Virmani

Faculty and Student Publications

We propose a definition of asymptotic flatness at timelike infinity in four spacetime dimensions. We present a detailed study of the asymptotic equations of motion and the action of supertranslations on asymptotic fields. We show that the Lee-Wald symplectic form Ω(g, δ1g, δ2g) does not get contributions from future timelike infinity with our boundary conditions. As a result, the “future charges” can be computed on any two-dimensional surface surrounding the sources at timelike infinity. We present expressions for supertranslation and Lorentz charges.


Near-Infrared Unsymmetrical Squaraine Core-Based Sensitizers For Co-Sensitized High-Photocurrent Dye-Sensitized Solar Cells, Jonathon Watson, Roberta R. Rodrigues, Jared H. Delcamp Jan 2022

Near-Infrared Unsymmetrical Squaraine Core-Based Sensitizers For Co-Sensitized High-Photocurrent Dye-Sensitized Solar Cells, Jonathon Watson, Roberta R. Rodrigues, Jared H. Delcamp

Faculty and Student Publications

Increased conversion of near-infrared (NIR) photons to electricity is needed to improve dye-sensitized solar cells (DSCs). Here, we report two squaraine dyes (RR13 and RR14) with unsymmetrical cores as NIR dyes in DSCs. Both dyes feature a conjugated indolizine donor with an indoline donor on the opposite side of the squaraine core. The dyes are studied via absorption spectroscopy, computational interrogation, and electrochemical analysis. The use of the strongly donating indolizine donor results in NIR photon-to-current conversion extending beyond 800 nm on TiO2 in DSC devices. The DSC devices were characterized by current-voltage curves, incident photon-to-current conversion efficiency measurements, and …


The University Is Part Of The Family, J. B. Clark Jan 2022

The University Is Part Of The Family, J. B. Clark

University of Mississippi News

Four Goulet siblings and two parents spend time together at Ole Miss


Synthesis Of Methanediol [Ch2(Oh)2]: The Simplest Geminal Diol, Cheng Zhu, N. Fabian Kleimeier, Andrew M. Turner, Santosh K. Singh, Ryan C. Fortenberry, Ralf I. Kaiser Jan 2022

Synthesis Of Methanediol [Ch2(Oh)2]: The Simplest Geminal Diol, Cheng Zhu, N. Fabian Kleimeier, Andrew M. Turner, Santosh K. Singh, Ryan C. Fortenberry, Ralf I. Kaiser

Faculty and Student Publications

Geminal diols—organic molecules carrying two hydroxyl groups at the same carbon atom—have been recognized as key reactive intermediates by the physical (organic) chemistry and atmospheric science communities as fundamental transients in the aerosol cycle and in the atmospheric ozonolysis reaction sequence. Anticipating short lifetimes and their tendency to fragment to water plus the aldehyde or ketone, free geminal diols represent one of the most elusive classes of organic reactive intermediates. Here, we afford an exceptional glance into the preparation of the previously elusive methanediol [CH2(OH)2] transient—the simplest geminal diol—via energetic processing of low-temperature methanol–oxygen ices. Methanediol was identified in the …