US LUA - (US LHC Users Association)

Session

Lightning Round Talks (2)

14 Dec 2023, 16:25

Conveners

Lightning Round Talks (2)

• Steven Goldfarb (University of Melbourne)

Contribution list Timetable

72. CMS ECAL L1 Trigger: Rejection of Anomalous Signals and Effects on e-gamma Candidates

Cort Thoreson (Northeastern University)

14/12/2023, 16:25

The CMS electromagnetic calorimeter (ECAL) is the sub-detector which measures the energies of electrons and photons. Particles collide and decay which interact with crystals and those crystals emit light. In the ECAL barrel, avalanche photodiodes (APDs) convert this light into an electronic pulse which is used to recreate the properties of particles such as energy. One of the challenges...

74. Graph Neural Networks for track reconstruction in ATLAS ITk

Minh-Tuan Pham (CERN)

14/12/2023, 16:35

The reconstruction of charged-particle trajectories plays an essential role in High-Energy Physics, as it determines the quality of particle identification, kinematic measurement, vertex finding, lepton reconstruction, and jet flavor tagging. The upcoming High Luminosity phase of the Large Hadron Collider (HL-LHC) represents a steep increase in pileup rate ($\left\langle\mu \right\rangle =...

65. Search for charged-lepton flavor violation in the production and decay of top quarks with the CMS detector

Jack Li (Northeastern University)

14/12/2023, 16:45

In this talk I will discuss a search for charged-lepton flavor violating processes in top quark (t) production and decay. The data were collected by the CMS experiment from proton-proton collisions at a center-of-mass energy of 13 TeV and correspond to an integrated luminosity of 138 fb$^{-1}$. The selected events are required to contain one opposite-sign electron-muon pair, a third charged...

62. Search for new physics in CMS Run2 data using MonoJet signature

Abhishikth Mallampalli (UW Madison)

14/12/2023, 16:55

Search for new particles produced at LHC in proton-proton collisions at 13 TeV, using events with energetic jets and large missing transverse momentum.

2 different analysis are presented, both based on data collected using CMS detector.

First analysis(MonoJet) ([1]) is published based on data sample corresponding to integrated lumi of $101 fb^{-1}$ and statistical combination with $36...

82. Status of the FoCal detector at ALICE

AMRIT GAUTAM (University of Kansas)

14/12/2023, 17:05

In this talk, we will present the latest results of the prototyping phase of the high-granularity
forward calorimeter (FoCal) of the ALICE experiment. This novel detector is part of the upgrade
project that ALICE will undergo during the LHC long shutdown scheduled for 2027 and lasting
until 2029. FoCal is a new generation forward calorimeter, designed to cover a pseudorapidity
acceptance...

83. Measurement of ttH Production Rate in the H to bb Decay Channel at CMS

Abhisek Datta (University of California, Los Angeles)

14/12/2023, 17:15

Associated production of the Higgs boson with a top quark-antiquark pair ($t\bar{t}H$) provides the best direct probe of the top-Higgs Yukawa coupling at tree-level. Measurement of this coupling is important not only to confirm the predictions made by the Standard Model but also to search for indications of new physics. In this talk, I will present an analysis of $t\bar{t}H$ production with...

88. Long Lived Particle Triggering at Level-1 with the CMS Hadron Calorimeter

Gillian Kopp

14/12/2023, 17:25

Long-lived particles are a compelling direction to search for physics beyond the Standard Model, and implementing dedicated long-lived particle (LLP) triggers provides an excellent avenue to expand experimental coverage into this challenging parameter space. We present a novel Compact Muon Solenoid (CMS) Level-1 LLP trigger that exploits the recent Phase I upgrade, which introduced a precision...

56. A Search for Sexaquarks in Parked 2018 Data at CMS

Wren Vetens (University of Wisconsin - Madison)

14/12/2023, 17:35

There has been much interest of late in the hypothetical "Sexaquark", a deeply bound uuddss state with potential as a dark matter candidate from entirely within the Standard Model. We discuss a first-of-its kind search for the production of its anti-particle at the LHC and its subsequent annihilation with a neutron in the CMS beampipe, with the unique doubly strange final state reconstructed...

91. Development of Front-End Electronic Modules for CMS MIPs Timing Detector, End-cap Timing Layer

Naomi Gonzalez

14/12/2023, 17:45

In 2026, the Large Hadron Collider (LHC) will be undergoing an upgrade to the High-Luminosity LHC (HL-LHC). With this new upgrade, the Compact Muon Solenoid (CMS) detector will have to be able withstand challenging conditions and maintain performance with an increased number of collisions. To achieve this, a new timing detector in CMS will sense minimum ionizing particles (MIPs) with a timing...

93. Readout for Calorimetry at Future Colliders: The HL-LHC ATLAS Liquid Argon Front-End Readout Electronics and Beyond

Gabriel Matos (Columbia University)

14/12/2023, 17:55

Future collider experiments, such as the High-Luminosity Large Hadron Collider (HL-LHC), present challenging experimental environments that require the development of new, custom, high-bandwidth, radiation-tolerant, front-end readout electronics for the calorimeter systems. One such example is the ATLAS Liquid Argon (LAr) calorimeter, which will get an entirely new readout system for the...

57. Systematic Effects in Jet Tagging Performance for the ATLAS Detector

Kevin Greif (University of California, Irvine)

14/12/2023, 18:05

Machine learning based jet tagging techniques have greatly enhanced the sensitivity of measurements and searches involving boosted final states at the LHC. However, differences between the Monte-Carlo simulations used for training and data lead to systematic uncertainties on tagger performance. This talk presents the performance of boosted top and W boson taggers when applied on data sets...