Электронный каталог

Статья

Tumasyan, A.
Search for Narrow Resonances in the b-Tagged Dijet Mass Spectrum in Proton-Proton Collisions at *%s = 13 TeV / A.Tumasyan, S.Afanasiev, D.Budkouski, I.Golutvin, I.Gorbunov, V.Karjavine, V.Korenkov, A.Lanev, A.Malakhov, V.Matveev, V.Palichik, V.Perelygin, M.Savina, V.Shalaev, S.Shmatov, S.Shulha, V.Smirnov, O.Teryaev, N.Voytishin, B.S.Yuldashev, A.Zarubin, I.Zhizhin, N.Krasnikov, D.Seitova, M.Finger, M.Finger Jr., Z.Tsamalaidze, [CMS Collab.] // Physical Review D [Electronic resource]. – 2023. – Vol.108, No.1. – P. 012009. – URL: https://doi.org/10.1103/PhysRevD.108.012009. – Bibliogr.: 54.

A search is performed for narrow resonances decaying to final states of two jets, with at least one jet originating from a 𝑏 quark, in proton-proton collisions at *%𝑠 = 13 TeV. The data set corresponds to an integrated luminosity of 138  fb*−*1 collected with the CMS detector at the LHC. Jets originating from energetic 𝑏 hadrons are identified through a 𝑏-tagging algorithm that utilizes a deep neural network or the presence of a muon inside a jet. The invariant mass spectrum of jet pairs is well described by a smooth parametrization and no evidence for the production of new particles is observed. Upper limits on the production cross section are set for excited 𝑏 quarks and other resonances decaying to dijet final states containing 𝑏 quarks. These limits exclude at 95% confidence level models of 𝑍' bosons with masses from 1.8 TeV to 2.4 TeV and of excited 𝑏 quarks with masses from 1.8 TeV to 4.0 TeV. This is the most stringent exclusion of excited 𝑏 quarks to date.



Спец.(статьи,препринты) = С 346.2в - Взаимодействие протонов с протонами
Спец.(статьи,препринты) = С 346.6 - Резонансы и новые частицы
ОИЯИ = ОИЯИ (JINR)2023