Study of excited Λb0 states decaying to Λb0π+π− in proton-proton collisions at √s=13TeV

Bibliographic Details
Parent link:	Physics Letters B Vol. 803.— 2020.— [135345, 22 p.]
Corporate Author:	Национальный исследовательский Томский политехнический университет Исследовательская школа физики высокоэнергетических процессов
Other Authors:	Sirunyan А. М., Tumasyan A. R., Adam W. Wolfgang, Ambrogi F. Federico, Tyurin N. E. Nikolay Evgenjevich, Babaev A. A. Anton Anatoljevich
Summary:	Title screen A study of excited Λb0 baryons is reported, based on a data sample collected in 2016-2018 with the CMS detector at the LHC in proton-proton collisions at a center-of-mass energy of 13 TeV, corresponding to an integrated luminosity of up to 140fb−1. The existence of four excited Λb0 states: Λb0(5912)0, Λb0(5920)0, Λb0(6146)0, and Λb0(6152)0 in the Λb0π+π− mass spectrum is confirmed, and their masses are measured. The Λb0π+π− mass distribution exhibits a broad excess of events in the region of 6040-6100 MeV, whose origin cannot be discerned with the present data.
Language:	English
Published:	2020
Subjects:	электронный ресурс труды учёных ТПУ CMS physics beauty baryon heavy baryon flavor spectroscopy experimental results
Online Access:	https://doi.org/10.1016/j.physletb.2020.135345
Format:	Electronic Book Chapter
KOHA link:	https://koha.lib.tpu.ru/cgi-bin/koha/opac-detail.pl?biblionumber=666366

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