# ATLAS Preprints

2021-10-12
09:23
 Measurement of the energy asymmetry in $t\bar{t}j$ production at 13 TeV with the ATLAS experiment and interpretation in the SMEFT framework / ATLAS Collaboration A measurement of the energy asymmetry in jet-associated top-quark pair production is presented using 139 $\mathrm{fb}^{-1}$ of data collected by the ATLAS detector at the Large Hadron Collider during $pp$ collisions at $\sqrt{s}=13$ TeV. [...] arXiv:2110.05453 ; CERN-EP-2021-181. - 2021. - 52 p. Fulltext - Previous draft version - Fulltext

2021-10-08
04:27
 Modelling the Data at the LHC / Yazgan, Efe (Rice U.) Measurements at hadron colliders rely on large scale quantum chromodynamics (QCD) Monte Carlo (MC) production for interpretation of the data. [...] arXiv:2110.02599 ; CMS CR-2021/166; PoS(PANIC2021)410. - 5 p. Fulltext

2021-10-07
16:10
 Heavy-flavour hadron production / Faggin, Mattia (INFN, Padua ; Padua U.) The conventional description of heavy-flavour hadron production in pp collisions is based on a factorisation approach, assuming universal fragmentation functions among collision systems. [...] arXiv:2109.09348. - 6 p. Fulltext

2021-10-01
09:53
 Search for Higgs boson decays into a pair of pseudoscalar particles in the $bb\mu\mu$ final state with the ATLAS detector in $pp$ collisions at $\sqrt{s}=13$ TeV / ATLAS Collaboration This paper presents a search for decays of the Higgs boson with a mass of 125 GeV into a pair of new pseudoscalar particles, $H\rightarrow aa$, where one $a$-boson decays into a $b$-quark pair and the other into a muon pair. [...] arXiv:2110.00313 ; CERN-EP-2021-157. - 2021. - 44 p. Fulltext - Previous draft version - Fulltext

2021-09-28
16:59
 Constraints on Higgs boson properties using $WW^{*}(\rightarrow e\nu\mu\nu)jj$ production in 36.1 fb$^{-1}$ of $\sqrt{s}=13$ TeV $pp$ collisions with the ATLAS detector / ATLAS Collaboration This article presents the results of two studies of Higgs boson properties using the $WW^*(\rightarrow e\nu\mu\nu)jj$ final state, based on a dataset corresponding to 36.1 fb$^{-1}$ of $\sqrt{s}=13$ TeV proton-proton collisions recorded by the ATLAS experiment at the Large Hadron Collider. [...] arXiv:2109.13808 ; CERN-EP-2021-096. - 2021. - 47 p. Fulltext - Previous draft version - Fulltext

2021-09-21
16:43
 Measurement of the $c$-jet mistagging efficiency in $t\bar{t}$ events using $pp$ collision data at $\sqrt{s}=13$ TeV collected with the ATLAS detector / ATLAS Collaboration A technique is presented to measure the efficiency with which $c$-jets are mistagged as b-jets (mistagging efficiency) using $t\bar{t}$ events, where one of the $W$ bosons decays into an electron or muon and a neutrino and the other decays into a quark-antiquark pair. [...] arXiv:2109.10627 ; CERN-EP-2021-166. - 2021. - 39 p. Fulltext - Previous draft version - Fulltext

2021-09-06
19:46
 Operation and performance of the ATLAS semiconductor tracker in LHC Run 2 / ATLAS Collaboration The semiconductor tracker (SCT) is one of the tracking systems for charged particles in the ATLAS detector. [...] arXiv:2109.02591 ; CERN-EP-2021-178. - 2021. - 55 p. Fulltext - Previous draft version

2021-09-06
15:56
 Search for exotic decays of the Higgs boson into $b\bar{b}$ and missing transverse momentum in $pp$ collisions at $\sqrt{s} = 13$ TeV with the ATLAS detector / ATLAS Collaboration A search for the exotic decay of the Higgs boson ($H$) into a $b\bar{b}$ resonance plus missing transverse momentum is described. [...] arXiv:2109.02447 ; CERN-EP-2021-098. - 2021. - 38 p. Fulltext - Previous draft version - Fulltext

2021-09-06
12:33
 AtlFast3: the next generation of fast simulation in ATLAS / ATLAS Collaboration The ATLAS experiment at the Large Hadron Collider has a broad physics programme ranging from precision measurements to direct searches for new particles and new interactions, requiring ever larger and ever more accurate datasets of simulated Monte Carlo events. [...] arXiv:2109.02551 ; CERN-EP-2021-174. - 2021. - 75 p. Fulltext - Previous draft version - Fulltext

2021-09-04
04:28
 Observation of electroweak production of two jets in association with an isolated photon and missing transverse momentum, and search for a Higgs boson decaying into invisible particles at 13 TeV with the ATLAS detector / ATLAS Collaboration This paper presents the measurement of the electroweak production of two jets in association with a $Z\gamma$ pair with the $Z$ boson decaying into two neutrinos. [...] arXiv:2109.00925. - 58 p. Fulltext