Measurement of event shapes in minimum-bias events from proton-proton collisions at $\sqrt{s}$ = 13 TeV

(CMS Collaboration) Chekhovsky, Vladimir ; ... ; Giljanović, Duje ; Godinović, Nikola ; Lelas, Damir ; Šćulac, Ana ; Kovač, Marko ; Petković, Andro ; Šćulac, Toni ; Bargassa, Pedrame ; Brigljević, Vuko ; Chitroda, Bhakti Kanulal ; Ferenček, Dinko ; Jakovčić, Krešimir ; Starodumov, Andrey ; Šuša, Tatjana ; ... ; Mishra, Saswat ; ... ; Roguljić, Matej ; ... ; Druzhkin, Dmitry (2025) Measurement of event shapes in minimum-bias events from proton-proton collisions at $\sqrt{s}$ = 13 TeV. Physical review D, 112 (11). ISSN 2470-0029

	PDF - Published Version - article Available under License Creative Commons Attribution. Download (2MB)
	PDF - Submitted Version - article Available under License Creative Commons Attribution. Download (1MB)

Abstract

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 center-of-mass energy of 13 TeV, corresponding to an integrated luminosity of 64 $\mu$b$^{-1}$. A number of observables related to the overall distribution of charged particles in the collisions are corrected for detector effects and compared with simulations. Inclusive event-shape distributions, as well as differential distributions of event shapes as functions of charged-particle multiplicity, are studied. None of the models investigated is able to satisfactorily describe the data. Moreover, there are significant features common amongst all generator setups studied, particularly showing data being more isotropic than any of the simulations. Multidimensional unfolded distributions are provided, along with their correlations.

Item Type:	Article
Uncontrolled Keywords:	High energy physics ; Experimental particle physics ; LHC ; CMS
Subjects:	NATURAL SCIENCES > Physics > Physics of Elementary Particles and Fields
Divisions:	Centre for detectors, sensors and electronics Division of Experimental Physics
Depositing User:	Lorena Palameta
Date Deposited:	22 Jan 2026 15:03
URI:	http://fulir.irb.hr/id/eprint/11071
DOI:	10.1103/rqvb-gfb7

Actions (login required)

View Item