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Related papers: A Large-$N$ Expansion for Minimum Bias

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A measurement of event-shape variables is presented, using a data sample produced in a special run with approximately one inelastic proton-proton collision per bunch crossing. The data were collected with the CMS detector at a…

High Energy Physics - Experiment · Physics 2025-12-16 CMS Collaboration

Measurements of inclusive observables, such as particle multiplicities and momentum spectra, have already delivered important information on soft-inclusive ("minimum-bias") physics at the Large Hadron Collider. In order to gain a more…

High Energy Physics - Phenomenology · Physics 2015-03-18 Kenneth Wraight , Peter Skands

The study of the minimum-bias charged-particle distributions is reviewed. The data are obtained using the ATLAS detector at the LHC in proton-proton collisions at the centre-of-mass energies from 0.9 to13 TeV. The particles are required to…

High Energy Physics - Experiment · Physics 2023-10-25 Yuri A. Kulchitsky

The observation of collectivity and strangeness enhancement in small collision systems, such as proton-proton (pp) and proton-lead (p-Pb) collisions, challenges traditional assumptions regarding thermalization and particle production…

High Energy Physics - Phenomenology · Physics 2025-08-29 Hirak Kumar Koley , Subikash Choudhury , Argha Deb , Mitali Mondal

Purported signatures of collective dynamics in small systems like proton-proton (pp) or proton-nucleus (p-A) collisions still lack unambiguous understanding. Despite the qualitative and/or quantitative agreement of the data to hydrodynamic…

High Energy Physics - Phenomenology · Physics 2020-10-07 Somnath Kar , Subikash Choudhury , Xiaoming Zhang , Daicui Zhou

The analysis of high-energy particle collisions is an excellent testbed for the non-extensive statistical approach. In these reactions we are far from the thermodynamical limit. In small colliding systems, such as electron-positron or…

High Energy Physics - Phenomenology · Physics 2017-02-27 Gábor Bíró , Gergely Gábor Barnaföldi , Tamás Sándor Biró , Károly Ürmössy , Ádám Takács

Measurements of charged particle distributions, sensitive to the underlying event, have been performed with the ATLAS detector at the LHC. The measurements are based on data collected using a minimum-bias trigger to select proton-proton…

High Energy Physics - Experiment · Physics 2012-08-27 The ATLAS Collaboration

Pseudorapidity, transverse momentum, and multiplicity distributions are measured in the pseudorapidity range $|\eta| <$ 2.4 for charged particles with transverse momenta satisfying $p_\mathrm{T} >$ 0.5 GeV in proton-proton collisions at a…

High Energy Physics - Experiment · Physics 2018-09-05 CMS Collaboration

Experimental data on analyzing power for inclusive meson and baryon production in hadron-proton(polarized) collisions have been analyzed. It is found that the existing data can be described by a simple function of collision energy,…

High Energy Physics - Phenomenology · Physics 2014-11-17 Victor V. Abramov

High-luminosity modern accelerators, like the Relativistic Heavy Ion Collider (RHIC) at BNL and Large Hadron Collider (LHC) at CERN, inherently have event pile-up scenarios which significantly contribute to physics events as a background.…

Nuclear Theory · Physics 2017-11-01 P. Garg , D. K. Mishra

We entertain the idea that robust theoretical expectations can become a tool in removing hidden observational or data-reduction biases. We illustrate this approach for a specific problem associated with gravitational microlensing. Using the…

Astrophysics · Physics 2007-05-23 Piotr Popowski , Charles Alcock

Recent work has provided the means to rigorously determine properties of super-hadronic matter from experimental data through the application of broad scale modeling of high-energy nuclear collisions within a Bayesian framework. These…

Nuclear Theory · Physics 2016-03-23 Evan Sangaline , Scott Pratt

We calculate the cross section and transverse-momentum ($P_{\bot}$) distribution of the Breit-Wheeler process in relativistic heavy-ion collisions and their dependence on collision impact parameter ($b$). To accomplish this, the Equivalent…

Nuclear Theory · Physics 2020-09-09 Wangmei Zha , James Daniel Brandenburg , Zebo Tang , Zhangbu Xu

The transverse momentum ($p_T$) and pseudorapidity ($\eta$) spectra of charged particles produced in proton-proton ($pp$) and lead-lead (Pb-Pb) collisions at the large hadron collider (LHC) are described by a hybrid model. In the model, the…

High Energy Physics - Phenomenology · Physics 2017-01-13 Ya-Hui Chen , Fu-Hu Liu , Sakina Fakhraddin , Magda A. Rahim , Mai-Ying Duan

Event-by-event analysis of heavy-ion collision events is an important tool for the study of the QCD phase boundary and formation of a quark-gluon plasma. A universal feature of phase boundaries is the appearance of increased fluctuations of…

High Energy Physics - Phenomenology · Physics 2007-05-23 T. A. Trainor

We generalize and extend the recently proposed method to account for contributions of system size (or volume/participant) fluctuations to the experimentally measured moments of particle multiplicity distributions. We find that in the…

Nuclear Theory · Physics 2024-03-07 Romain Holzmann , Volker Koch , Anar Rustamov , Joachim Stroth

The "Underlying Event" at CMS (under nominal and start-up conditions) is studied by examining charged particle and momentum densities in the "transverse" region in charged particle jet production. The predictions of various QCD models with…

High Energy Physics - Experiment · Physics 2008-10-28 Yuan Chao

The Standard Model (SM) is the best description of fundamental particles and their interactions we have to date. From this theory, all phenomena in the macroscopic world (except for gravity) can be explained, and it has successfully…

High Energy Physics - Phenomenology · Physics 2024-07-30 Joan Ruiz-Vidal

We demonstrate that a new type of analysis in heavy-ion collisions, based on an event-by-event analysis of the transverse momentum distribution, allows us to obtain information on secondary interactions and collective behaviour that is not…

High Energy Physics - Phenomenology · Physics 2011-09-13 Marek Gazdzicki , Andrei Leonidov , Gunther Roland

Current efforts to correctly categorize natural events from suspected explosion sources with data that is collected by ground- or space-based sensors presents historical challenges that remain unaddressed by the Event Categorization Matrix…

Geophysics · Physics 2025-01-20 Scott Koermer , Joshua D. Carmichael , Brian J. Williams
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