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Standard jet finding techniques used in elementary particle collisions have not been successful in the high track density of heavy-ion collisions. This paper describes a modified cone-type jet finding algorithm developed for the complex…

核实验 · 物理学 2008-11-26 S-L Blyth , M J Horner , T Awes , T Cormier , H Gray , J L Klay , S R Klein , M van Leeuwen , A Morsch , G Odyniec , A Pavlinov

Jet production in proton-proton collisions is one of the main phenomenological predictions of QCD. The ATLAS and CMS Collaborations have performed measurements of several jet observables at the LHC and compared their results to theoretical…

高能物理 - 实验 · 物理学 2019-08-14 Marco Peruzzi

The production of multiple jets or vector bosons in association with jets at the LHC provides a unique testing ground for Quantum Chromodynamics (QCD) in the high-energy regime. With the increasing precision of the ATLAS measurements,…

高能物理 - 实验 · 物理学 2026-01-21 Giulia Manco

In high-energy particle collisions, the reconstruction of secondary vertices from heavy-flavour hadron decays is crucial for identifying and studying jets initiated by $b$- or $c$-quarks. Traditional methods, while effective, require…

高能物理 - 实验 · 物理学 2024-11-08 Samuel Van Stroud , Nikita Pond , Max Hart , Jackson Barr , Sébastien Rettie , Gabriel Facini , Tim Scanlon

The status of CMS jet simulations and physics analysis in heavy ion collisions is presented. Jet reconstruction and high transverse momentum particle tracking in the high multiplicity environment of heavy ion collisions at the LHC using the…

高能物理 - 唯象学 · 物理学 2015-06-25 Igor Lokhtin

A search for resonances in events with the $\gamma$+jet final state has been performed using proton-proton collision data collected at $\sqrt{s}$ = 13 TeV by the CMS experiment at the LHC. The total data analyzed correspond to an integrated…

高能物理 - 实验 · 物理学 2024-01-11 CMS Collaboration

The irreducible background from Z(nunu)+jets, to beyond the Standard Model searches at the LHC, can be calibrated using gamma+jets data. The method utilises the fact that at high vector boson pT, the event kinematics are the same for the…

高能物理 - 唯象学 · 物理学 2015-05-28 S. Ask , M. A. Parker , T. Sandoval , M. E. Shea , W. J. Stirling

The energy loss of fast partons traversing the strongly interacting matter produced in high-energy nuclear collisions is one of the most interesting observables to probe the nature of the produced medium. The multipurpose Compact Muon…

核实验 · 物理学 2019-08-14 Christof Roland

We present the results of a search for new particles that lead to a \Z boson plus jets in $p\bar{p}$ collisions at $\sqrt{s}=1.96$ TeV using the Collider Detector at Fermilab (CDF II). A data sample with a luminosity of 1.06 \ifb\ collected…

高能物理 - 实验 · 物理学 2010-05-12 CDF Collaboration , T. Aaltonen

At the ATLAS and CMS experiments at CERN's Large Hadron Collider, the rate of proton-proton collisions far exceeds the rate at which data can be recorded. A real-time event selection process, or "trigger", is needed to ensure that the data…

高能物理 - 实验 · 物理学 2025-09-10 Noah Clarke Hall , Nikolaos Konstantinidis

Improving the understanding of signal and background distributions in signal-region is a valuable key to enhance any analysis in collider physics. This is usually a difficult task because -- among others -- signal and backgrounds are hard…

高能物理 - 唯象学 · 物理学 2025-11-26 Ezequiel Alvarez , Manuel Szewc , Alejandro Szynkman , Santiago Tanco , Tatiana Tarutina

We propose a model-independent approach for the search of charged long-lived particles produced in ultraperipheral collisions at the LHC. The main idea is to improve event reconstruction at ATLAS and CMS with the help of their forward…

高能物理 - 唯象学 · 物理学 2020-01-30 S. I. Godunov , V. A. Novikov , A. N. Rozanov , M. I. Vysotsky , E. V. Zhemchugov

A search is performed for localised excesses in dijet mass distributions of low-dijet-mass events produced in association with a high transverse energy photon. The search uses up to 79.8 fb$^{-1}$ of LHC proton-proton collisions collected…

高能物理 - 实验 · 物理学 2019-06-14 ATLAS Collaboration

The reconstruction and calibration algorithms used to calculate missing transverse momentum ($E_{\rm T}^{\rm miss}$) with the ATLAS detector exploit energy deposits in the calorimeter and tracks reconstructed in the inner detector as well…

高能物理 - 实验 · 物理学 2017-04-24 ATLAS Collaboration

A search for physics beyond the standard model involving events with one or more photons, jets, and missing transverse energy has been performed by the CMS experiment. The data sample corresponds to an integrated luminosity of 4.93 inverse…

高能物理 - 实验 · 物理学 2013-04-25 CMS Collaboration

We study the prospects of characterising Dark Matter at colliders using Machine Learning (ML) techniques. We focus on the monojet and missing transverse energy (MET) channel and propose a set of benchmark models for the study: a typical…

高能物理 - 唯象学 · 物理学 2021-06-23 C. K. Khosa , V. Sanz , M. Soughton

A search is presented for new particles decaying to large numbers (7 to greater or equal to 10) of jets, missing transverse momentum and no isolated electrons or muons. This analysis uses 20.3/fb of pp collision data at sqrt(s)=8 TeV…

高能物理 - 实验 · 物理学 2014-02-03 ATLAS Collaboration

The ALICE Collaboration reports measurements of the large relative transverse momentum ($k_{\text{T}}$) component of jet substructure in pp and Pb$-$Pb collisions at center-of-mass energy per nucleon pair $\sqrt{s_{\text{NN}}}=5.02$ TeV.…

核实验 · 物理学 2025-08-01 ALICE Collaboration

At the Relativistic Heavy Ion Collider, jets have been a useful tool to probe the properties of the hot, dense matter created. At the Large Hadron Collider, collisions of Pb+Pb at $\sqrt{s_{NN}}$ = 5.5 TeV will provide a large cross section…

核实验 · 物理学 2019-08-13 M. B. Tonjes

With the increase in energy of the Large Hadron Collider to a centre-of-mass energy of 13 TeV for Run 2, events with dense environments, such as in the cores of high-energy jets, became a focus for new physics searches as well as…

高能物理 - 实验 · 物理学 2017-10-27 ATLAS Collaboration