Measurement of the Bs0 → J/ψKS0 effective lifetime from proton-proton collisions at √s=13 TeV

(CMS Collaboration) Hayrapetyan, A.; Tumasyan, A.; ..., ...; 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; ..., ...; Zhokin, A. (2024) Measurement of the Bs0 → J/ψKS0 effective lifetime from proton-proton collisions at √s=13 TeV. Journal of High Energy Physics, 2024 (10). ISSN 1029-8479

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Abstract

The effective lifetime of the B-s(0) meson in the decay B-s(0) -> J/psi K-S(0) is measured using data collected during 2016-2018 with the CMS detector in root s = 13 TeV proton-proton collisions at the LHC, corresponding to an integrated luminosity of 140 fb(-1). The effective lifetime is determined by performing a two-dimensional unbinned maximum likelihood fit to the B-s(0) meson invariant mass and proper decay time distributions. The resulting value of 1.59 +/- 0.07(stat) +/- 0.03(syst) ps is the most precise measurement to date and is in good agreement with the expected value.

Item Type:	Article
Uncontrolled Keywords:	B Physics; Hadron-Hadron Scattering; Lifetime
Subjects:	NATURAL SCIENCES NATURAL SCIENCES > Physics NATURAL SCIENCES > Physics > Physics of Elementary Particles and Fields
Divisions:	Division of Experimental Physics
Depositing User:	Virna Brumnić
Date Deposited:	07 Apr 2026 08:27
URI:	http://fulir.irb.hr/id/eprint/11588
DOI:	10.1007/JHEP10(2024)247

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