Электронный каталог

Статья

Tumasyan, A.
Precision Measurement of the Z Boson Invisible Width in pp Collisions at *%s = 13 TeV / A.Tumasyan, S.Afanasiev, D.Budkouski, M.Finger, M.Finger Jr., I.Golutvin, I.Gorbunov, V.Karjavine, A.Khvedelidze, V.Korenkov, A.Lanev, A.Malakhov, V.Matveev, V.Palichik, V.Perelygin, M.Savina, D.Seitova, V.Shalaev, S.Shmatov, S.Shulha, V.Smirnov, O.Teryaev, Z.Tsamalaidze, N.Voytishin, B.S.Yuldashev, A.Zarubin, I.Zhizhin, N.Krasnikov, [CMS Collab.] // Physics Letters B [Electronic resource]. – 2023. – Vol.842. – P.137563. – URL: https://doi.org/10.1016/j.physletb.2022.137563.

A precise measurement of the invisible width of the Z boson produced in proton-proton collisions at a center-of-mass energy of 13 TeV is presented using data recorded by the CMS experiment at the LHC, corresponding to an integrated luminosity of 36.3 . The result is obtained from a simultaneous fit to kinematic distributions for two data samples of Z boson plus jets: one dominated by Z boson decays to invisible particles and the other by Z boson decays to muon and electron pairs. The invisible width is measured to be . This result is the first precise measurement of the invisible width of the Z boson at a hadron collider, and is the single most precise direct measurement to date, competitive with the combined result of the direct measurements from the LEP experiments



Спец.(статьи,препринты) = С 346.6е2 - Промежуточные бозоны
ОИЯИ = ОИЯИ (JINR)2023