Study of Excited ?0 b States Decaying to ?0 b?+?? in proton-proton Collisions at ?s = 13 TeV
Yükleniyor...
Tarih
2020
Yazarlar
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
