Study of Excited ?0 b States Decaying to ?0 b?+?? in proton-proton Collisions at ?s = 13 TeV

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Küçük Resim

Tarih

2020

Dergi Başlığı

Dergi ISSN

Cilt Başlığı

Yayıncı

The CMS Collaboration

Erişim Hakkı

Özet

A study of excited Lambda(0)(b) 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 Lambda(0)(b) states: Lambda(0)(b) (5912)(0), Lambda(0)(b) (5920)(0), Lambda(0)(b) (6146)(0), and Lambda(0)(b) (6152)(0) in the Lambda(0)(b)pi(+)pi(-) mass spectrum is confirmed, and their masses are measured. The Lambda(0)(b)pi(+)pi(-) mass distribution exhibits a broad excess of events in the region of 6040-6100 MeV, whose origin cannot be discerned with the present data. (C) 2020 The Author(s). Published by Elsevier B.V.

Açıklama

Anahtar Kelimeler

CMS, Physics, Beauty baryon, Heavy baryon, Heavy flavor, Heavy flavor, Flavor spectroscopy, Experimental results

Kaynak

WoS Q Değeri

Q1

Scopus Q Değeri

Q2

Cilt

Sayı

Künye

Physıcs Letters B, 803, 135345, 2020