Szczegóły publikacji
Opis bibliograficzny
Measurement of the top-quark production cross section and charge asymmetry at LHCb / R. Aaij, [et al.], M. AKTHAR, [et al.], S. BASHIR, [et al.], M. FIRLEJ, [et al.], T. FIUTOWSKI, [et al.], W. GOMUŁKA, [et al.], S. HASHMI, [et al.], M. IDZIK, [et al.], K. KALECIŃSKA, [et al.], J. MOROŃ, [et al.], A. OBŁĄKOWSKA-MUCHA, [et al.], K. M. SOWA, [et al.], K. ŚWIENTEK, [et al.], T. SZUMLAK, [et al.], A. UKLEJA, [et al.] // Physical Review Letters ; ISSN 0031-9007 . — 2026 — vol. 136 iss. 22 art. no. 221801, s. 221801-1–221801-15. — Bibliogr. s. 221801-6–221801-9, Abstr. — Publikacja dostępna online od: 2026-06-01
Autorzy (1206)
Dane bibliometryczne
| ID BaDAP | 168605 |
|---|---|
| Data dodania do BaDAP | 2026-07-23 |
| Tekst źródłowy | URL |
| DOI | 10.1103/c1x7-f9wn |
| Rok publikacji | 2026 |
| Typ publikacji | artykuł w czasopiśmie |
| Otwarty dostęp |  |
| Creative Commons | |
| Czasopismo/seria | Physical Review Letters |
Abstract
The first measurements of the top- and antitop-quark differential production cross sections and the top-quark charge asymmetry in the forward region are presented, using proton-proton collision data collected by the LHCb experiment at a center-of-mass energy of 13 TeV corresponding to an integrated luminosity of 5.4 fb−1 . The total production cross sections of top and antitop quarks are also determined. Measurements are performed using the 𝜇+𝑏-jet final state within a fiducial region defined by 𝑏 -jet 𝑝T,jet>50 GeV and pseudorapidity 2.2<𝜂jet<4.0 , with the muon from the 𝑊 -boson decay required to have 𝑝T,𝜇>25 GeV and 2.0 <𝜂𝜇 <4.5 . The muon and 𝑏 -jet system must satisfy 𝑝T(𝜇+jet)>20 GeV . The measured integrated production cross sections for the top and antitop quarks are 𝜎𝑡=0.95±0.04±0.08±0.02 pb , 𝜎 ¯ 𝑡 =0.81±0.03±0.07±0.02 pb , where the first uncertainty is statistical, the second systematic, and the third accounts for the luminosity uncertainty. The top-quark charge asymmetry is measured to be 𝐴𝑡 𝐶=0.08±0.03±0.01 , where the first uncertainty is statistical and the second is systematic. These results are consistent with next-to-leading order Standard Model predictions.
