Study of excited Lambda(0)(b) states decaying to Lambda(0)(b)pi(+)pi(-) in proton-proton collisions at root s=13TeV
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Published version
Author(s)
Type
Journal Article
Abstract
A study of excited Λ0bbaryons 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 140 fb−1. The existence of four excited Λ0bstates: Λ0b(5912)0, Λ0b(5920)0, Λ0b(6146)0, and Λ0b(6152)0in the Λ0bπ+π−mass spectrum is confirmed, and their masses are measured. The Λ0bπ+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.
Date Issued
2020-04-10
Date Acceptance
2020-02-26
Citation
Physics Letters B: Nuclear Physics and Particle Physics, 2020, 803, pp.1-22
ISSN
0370-2693
Publisher
Elsevier
Start Page
1
End Page
22
Journal / Book Title
Physics Letters B: Nuclear Physics and Particle Physics
Volume
803
Copyright Statement
©2020 The Author(s). Published by Elsevier B.V. This is an open access article under the CC BY license (http://creativecommons.org/licenses/by/4.0/). Funded by SCOAP
Identifier
http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=WOS:000521730300061&DestLinkType=FullRecord&DestApp=ALL_WOS&UsrCustomerID=1ba7043ffcc86c417c072aa74d649202
Subjects
Science & Technology
Physical Sciences
Astronomy & Astrophysics
Physics, Nuclear
Physics, Particles & Fields
Physics
CMS
Beauty baryon
Heavy baryon
Heavy flavor
Flavor spectroscopy
Experimental results
QED RADIATIVE-CORRECTIONS
UNIVERSAL MONTE-CARLO
HEAVY BARYONS
QUARK-MODEL
PHOTOS
Publication Status
Published
Article Number
ARTN 135345
Date Publish Online
2020-03-02