Электронный каталог

Статья

Hayrapetyan, A.
Measurement of the Drell–Yan Forward-Backward Asymmetry and of the Effective Leptonic Weak Mixing Angle in Proton-Proton Collisions at *%s = 13 TeV / A.Hayrapetyan, S.Afanasiev, V.Alexakhin, 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, Z.Tsamalaidze, [CMS Collab.]. – Text : electronic // Physics Letters B. – 2025. – Vol. 866. – P. 139526. – URL: https://doi.org/10.1016/j.physletb.2025.139526. – Bibliogr.: 75.

The forward-backward asymmetry in Drell–Yan production and the effective leptonic electroweak mixing angle are measured in proton-proton collisions at *%𝑠 = 13 TeV, collected by the CMS experiment and corresponding to an integrated luminosity of 138 fb&sup(−1). The measurement uses both dimuon and dielectron events, and is performed as a function of the dilepton mass and rapidity. The unfolded angular coefficient 𝐴&sub(4) is also extracted, as a function of the dilepton mass and rapidity. Using the CT18Z set of parton distribution functions, we obtain sin&sup(2) *y&sup(𝓁)&sub(eff) = 0.23152 *( 0.00031, where the uncertainty includes the experimental and theoretical contributions. The measured value agrees with the standard model fit result to global experimental data. This is the most precise sin&sup(2) *y&sup(𝓁)&sub(eff) measurement at a hadron collider, with a precision comparable to the results obtained at LEP and SLD



Спец.(статьи,препринты) = С 346.2в - Взаимодействие протонов с протонами
Спец.(статьи,препринты) = С 346.6е2 - Промежуточные бозоны
ОИЯИ = ОИЯИ (JINR)2025