Szczegóły publikacji
Opis bibliograficzny
First observation of top quark production in the forward region / R. Aaij, [et al.], M. FIRLEJ, [et al.], T. FIUTOWSKI, [et al.], M. IDZIK, [et al.], W. KUCEWICZ, [et al.], P. MORAWSKI, [et al.], J. MOROŃ, [et al.], A. OBŁĄKOWSKA-MUCHA, [et al.], K. ŚWIENTEK, [et al.], T. SZUMLAK, [et al.] // Physical Review Letters ; ISSN 0031-9007. — 2015 — vol. 115 iss. 11, s. 112001-1–112001-10. — Bibliogr. s. 112001-5–112001-6. — Publikacja dostępna online od: 2015-09-08. — W. Kucewicz – dod. afiliacja: Polish Academy of Sciences
Autorzy (3000)
Dane bibliometryczne
| ID BaDAP | 94463 |
|---|---|
| Data dodania do BaDAP | 2016-02-04 |
| Tekst źródłowy | URL |
| DOI | 10.1103/PhysRevLett.115.112001 |
| Rok publikacji | 2015 |
| Typ publikacji | artykuł w czasopiśmie |
| Otwarty dostęp | |
| Czasopismo/seria | Physical Review Letters |
Abstract
Top quark production in the forward region in proton-proton collisions is observed for the first time. The W + b final state with W -> mu nu is reconstructed using muons with a transverse momentum, p(T), larger than 25 GeV in the pseudorapidity range 2.0 < eta < 4.5. The b jets are required to have 50 < p(T) < 100 GeV and 2.2 < eta < 4.2, while the transverse component of the sum of the muon and b-jet momenta must satisfy p(T) > 20 GeV. The results are based on data corresponding to integrated luminosities of 1.0 and 2.0 fb(-1) collected at center-of-mass energies of 7 and 8 TeV by LHCb. The inclusive top quark production cross sections in the fiducial region are sigma(top)[7 TeV] = 239 +/- 53(stat) +/- 33(syst) +/- 24(theory) fb; sigma(top)[8 TeV ] = 289 +/- 43(stat) +/- 40(syst) +/- 29(theory) fb: These results, along with the observed differential yields and charge asymmetries, are in agreement with next-to-leading order standard model predictions.