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217 papers · 1 filter
Machine Learning for Multi-messenger Probes of New Physics and Cosmology: A Review and Perspective
Andrea Addazi, Konstantin Belotsky, Vitaly Beylin +18
The multi-messenger exploration of dark matter and physics beyond the Standard Model has emerged as a central direction in modern astro-particle physics, particularly following the…
Neural network enhanced Bayesian global analysis of relativistic heavy ion collisions
Jussi Auvinen, Kari J. Eskola, Henry Hirvonen +1
We introduce a novel deep convolutional neural network (NN) -enhanced Bayesian global analysis of bulk observables in highest-energy heavy-ion collisions, using relativistic 2+1 D…
Validating a Machine Learning Approach to Identify Quenched Jets in Heavy-Ion Collisions
Yilun Wu, Yi Chen, Julia Velkovska
Jet quenching is a phenomenon in heavy-ion collisions arising from jet interactions with the quark-gluon plasma (QGP). Its study is complicated by the interplay of multiple physics…
Deep Image Reconstruction for Background Subtraction in Heavy-Ion Collisions
Umar Sohail Qureshi, Raghav Kunnawalkam Elayavalli
Jet reconstruction in an ultra-relativistic heavy-ion collision suffers from a notoriously large, fluctuating thermal background. Traditional background subtraction methods struggl…
The effect of recoils on soft-drop-groomed observables in -tagged jets in a multistage approach
Y. Tachibana, C. Sirimanna, A. Majumder +49
We investigate medium-induced modifications to jet substructure observables that characterize hard components in central Pb-Pb collisions at ~TeV. Using a multi…
Feasibility of measuring the speed of sound of the quark-gluon plasma from the multiplicity and mean of ultracentral heavy-ion collisions
Lorenzo Gavassino, Henry Hirvonen, Jean-François Paquet +2
The mean transverse momentum of hadrons has been observed experimentally and in numerical simulations to have a power-law dependence on the hadronic multiplic…
Quark flavor equilibration of the quark-gluon plasma
Andrew Gordeev, Steffen A. Bass, Berndt Mueller +1
The early stage of a heavy-ion collision is marked by rapid entropy production and the transition from a gluon saturated initial condition to a plasma of quarks and gluons that evo…
A New Herwig7 Underlying Event Tune: from RHIC to LHC Energies
Umar Sohail Qureshi, Raghav Kunnawalkam Elayavalli, Luke Mozarsky +2
We present parameter sets corresponding to new underlying event tunes for the Herwig7.3 Monte Carlo event generator. The existing Herwig tunes are in good agreement with LHC data,…
Probing Compressed Mass Spectrum Supersymmetry at the LHC with the Vector Boson Fusion Topology
Umar Sohail Qureshi, Alfredo Gurrola, Andres Flórez
We present a phenomenology study probing pair production of supersymmetric charginos and neutralinos ("electroweakinos") with the vector boson fusion (VBF) topology in proton-proto…
Probing Light Scalars and Vector-like Quarks at the High-Luminosity LHC
Umar Sohail Qureshi, Andres Flórez, Alfredo Gurrola +1
A model based on a extension of the Standard Model can address the mass hierarchy between generations of fermions, explain thermal dark matter abundance, and the muo…
Energy-scaling behavior of intrinsic transverse momentum parameters in Drell-Yan simulation
CMS Collaboration
An analysis is presented based on models of the intrinsic transverse momentum (intrinsic ) of partons in nucleons by studying the dilepton transverse momentum in Drel…
Relaxation times for disoriented isospin condensates in high energy heavy ion collisions
Olivia Chabowski, Joseph I. Kapusta, Mayank Singh
Fluctuations between charged and neutral kaons measured by the ALICE Collaboration in Pb-Pb collisions at the LHC exceed conventional explanations. Previously it was shown that if…
Bayesian Inference analysis of jet quenching using inclusive jet and hadron suppression measurements
R. Ehlers, Y. Chen, J. Mulligan +50
The JETSCAPE Collaboration reports a new determination of the jet transport parameter in the Quark-Gluon Plasma (QGP) using Bayesian Inference, incorporating all availabl…
Covariant formulation of spinodal decomposition in rapidly expanding quark gluon plasma
Joseph I. Kapusta, Mayank Singh, Thomas Welle
Quantum Chromodynamics (QCD) is expected to have a first order phase transition between the confined hadron gas and the deconfined quark gluon plasma at high baryon densities. This…
Analytical insights into the interplay of momentum, multiplicity and the speed of sound in heavy-ion collisions
Gabriel Soares Rocha, Lorenzo Gavassino, Mayank Singh +1
We introduce a minimal model of ultracentral heavy-ion collisions to study the relation between the speed of sound of the produced plasma and the final particles' energy and multip…
Searching for exclusive leptoquarks with the Nambu-Jona-Lasinio composite model at the LHC and HL-LHC
Sehar Ajmal, Jethro Gaglione, Alfredo Gurrola +5
We present a detailed study concerning a new physics scenario involving four fermion operators of the Nambu-Jona-Lasinio type characterized by a strong-coupling ultraviolet fixed p…
GUT origins of general electroweak multiplets and their oblique parameters
Liang Chen, Ta-Wei Chan, Thomas W. Kephart +2
We survey the scalar electroweak multiplets that can originate from a grand unified theory (GUT) like , or . We compute the oblique parameters , and …
Astrophysically sourced quantum coherent photonic signals
Arjun Berera, Jaime Calderón-Figueroa, Liang Chen +1
Stimulated emission is shown to be robust in stars. Through Bose enhancement this produces quantum states of aligned, monochromatic photons similar to a laser. The probability of c…
Hard jet substructure in a multistage approach
Y. Tachibana, A. Kumar, A. Majumder +56
We present predictions and postdictions for a wide variety of hard jet-substructure observables using a multistage model within the JETSCAPE framework. The details of the multistag…
Probing a with non-universal fermion couplings through top quark fusion, decays to bottom quarks, and machine learning techniques
Diego Barbosa, Felipe Díaz, Liliana Quintero +5
The production of heavy mass resonances has been widely studied theoretically and experimentally. Several extensions of the standard model (SM) of particle physics, naturally give…
Resolving the Scales of the Quark-Gluon Plasma with Energy Correlators
Carlota Andres, Fabio Dominguez, Raghav Kunnawalkam Elayavalli +3
Jets provide us with ideal probes of the quark-gluon plasma (QGP) produced in heavy-ion collisions, since its dynamics at its different scales is imprinted into the multi-scale sub…
Identifying quenched jets in heavy ion collisions with machine learning
Lihan Liu, Julia Velkovska, Marta Verweij
Measurements of jet substructure in ultra-relativistic heavy ion collisions suggest that the jet showering process is modified by the interaction with quark gluon plasma. Modificat…
A Survey of Family Unification Models with Bifundamental Matter
Elijah Sheridan, Thomas W. Kephart
Extensions of the Standard Model have been attempted from the bottom up and from the top down yet there remains a largely unexplored middle ground. In this paper, using the Mathema…
Muon Anomaly from Vector-like Leptons in a 2-Higgs-doublet + Scalar Singlet Model
Tim Brune, Thomas W. Kephart, Heinrich Päs
We revisit an economical model for the anomaly featuring a vector-like charged fermion, a scalar doublet and a scalar singlet in the light of new results from Fermilab. The p…