US LUA - (US LHC Users Association)

Session

Lightning Round Talks (3)

15 Dec 2023, 08:30

Conveners

Lightning Round Talks (3)

• Corrinne Mills ()

Contribution list Timetable

78. A Search for Ultra-heavy Resonances Decaying to Vector-like Quark Pairs at the Run 2 CMS Experiment

Ethan Cannaert (University of California Davis)

15/12/2023, 08:30

Diquarks are a class of ultra-heavy resonances that can theoretically be produced at the Large Hadron Collider with relatively large cross-sections and could provide explanations for a number of curious high-mass events reconstructed at the CMS Experiment during the Run 2 data-taking period. In theories where diquarks decay to pairs of vector-like quarks (VLQs), the resulting hadronic final...

76. Measurement of charged and full jet production and nuclear modification factor in pp and p−Pb collisions with ALICE

Austin Schmier (University of Tennessee - Knoxville)

15/12/2023, 08:40

The study of jet production in small collision systems is essential for testing our understanding of perturbative and non perturbative QCD and cold nuclear matter effects. In addition, studies at high multiplicity in small collision systems exhibit signatures of collectivity, which is still not fully understood within a unified picture across system size. Jet quenching in small systems is not...

80. Measurements of the Higgs potential at the LHC

Brendon Bullard (SLAC National Accelerator Laboratory)

15/12/2023, 08:50

The overabundance of matter over antimatter in the universe today is one of the major unanswered questions in modern physics. Several mechanisms for generating this asymmetry have been theorized but not all are testable at current particle physics facilities. If beyond the Standard Model (BSM) physics enters in the Higgs sector that modifies to the electroweak phase transition, electroweak...

77. Studying dense gluonic matter at LHCb

Thomas Boettcher (MIT)

15/12/2023, 09:00

The proton is made up of quarks and gluons that interact via the  strong nuclear force. These particles radiate low-energy gluons, resulting in high gluon densities and potentially producing a phase of dense gluonic matter. Studying matter at high gluon densities is crucial for understanding the dynamics of high-energy hadron collisions and could help reveal how gluons contribute to the...

79. Search for VLQs decaying to light SM quarks in Run 2 data from the ATLAS Experiment

Zackary Alegria (Oklahoma State University)

15/12/2023, 09:10

Vector-like quarks (VLQs) are a common feature of many Standard Model (SM) extensions that propose additional particles beyond the SM to resolve some of the underlying inadequacies such as the hierarchy problem, matter-antimatter asymmetry, dark matter, etc. A large interest exists in looking at VLQs that decay primarily to a SM boson and third-generation quark, but there exists the...

68. Techniques for ML-based Model Agnostic Searches in CMS

Oz Amram (Fermilab)

15/12/2023, 09:20

The possibilities of BSM particles that could be hiding the LHC data are too numerous to be covered by direct searches. Recently, new types of model agnostic searches have been proposed that can achieve significant sensitivity enhancements to a wide range of distinct signal models in a single search. These new techniques use sophisticated in machine learning methods in entirely data-driven...

81. Quality Control for ATLAS Phase 2 Inner Tracker Upgrade at The University of Oklahoma

Achmad Aditya Gerwin (University of Oklahoma)

15/12/2023, 09:30

The University of Oklahoma (OU) is contributing to the quality control (QC) of the ATLAS experiment Phase 2 upgrade of the Inner Tracker (ITk) pixel detector. OU has been certified to perform a variety of QC tests, including thickness measurement, visual inspection, and low-voltage/high-voltage tests of bare and populated PCBs. OU is also contributing to the development of a technique to do...

85. CMS MTD upgrade and prospects for identified jet substructure measurements for QGP studies

Enea Prifti

15/12/2023, 09:40

The CMS detector at the LHC is a versatile experimental device for explorations of various aspects of the standard model, searches for exotic hadrons and beyond the standard model physics, such as extra dimensions and dark-matter particle candidates. The experimental apparatus has also been used to perform dedicated studies of the primordial form of deconfined partonic matter, the quark-gluon...

86. Unveiling the Potential for Ultraperipheral Collisions of Heavy Ions: Novel Trigger Strategies and Optimized Physics Performance in the CMS Experiment at 5.36 TeV

Saray Arteaga Escatel (The University of Kansas)

15/12/2023, 09:50

Collisions involving ultraperipheral heavy ions (UPCs) serve as a valuable tool for investigating nuclear parton distribution functions (nPDFs). Specifically, they are instrumental in characterizing nuclear matter at Bjorken-$x<10^{-3}$ and low squared momentum transfer (shadowing/saturation regime). Additionally, UPCs provide an opportunity to explore phenomena beyond the standard model. To...

87. CICADA: Anomaly Detection for New Physics Searches at the CMS Level-1 Trigger

Ho Fung Tsoi

15/12/2023, 10:00

BSM physics has yet to be discovered at the LHC. Three possibilities remain: new physics cannot be produced given the current center-of-mass energy, more data need to be collected, or the physics may be present but we are looking in the wrong places and making the wrong event selections. The first round of event selection at CMS occurs at the Level-1 trigger, and machine learning (ML) can be...