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Article
Report number arXiv:1405.4144 ; CERN-PH-EP-2014-089 ; CERN-PH-EP-2014-089
Title Beauty production in pp collisions at ss = 2.76 TeV measured via semi-electronic decays
Author(s) ALICE Collaboration  Zeige alle 947 Autoren
Publication 2014-11-10
Imprint 16 May 2014
Number of pages 12
Note Comments: 18 pages, 2 captioned figures, 3 tables, authors from page 13 to page 18
21 pages, 6 captioned figures, 2 tables, authors from page 16, published version, figures at http://aliceinfo.cern.ch/ArtSubmission/node/1724
In: Phys. Lett. B 738 (2014) 97-108
DOI 10.1016/j.physletb.2014.09.026
Subject category Nuclear Physics - Experiment ; Particle Physics - Experiment
Accelerator/Facility, Experiment CERN LHC ; ALICE
Free keywords QCD ; heavy quark production ; experimental results ; heavy-flavour production ; beauty production
Abstract The ALICE collaboration at the LHC reports measurement of the inclusive production cross section of electrons from semi-leptonic decays of beauty hadrons with rapidity |y|<0.8|y|<0.8 and transverse momentum 1<pT<101<pT<10 GeV/cc, in pp collisions at s=s= 2.76 TeV. Electrons not originating from semi-electronic decay of beauty hadrons are suppressed using the impact parameter of the corresponding tracks. The production cross section of beauty decay electrons is compared to the result obtained with an alternative method which uses the distribution of the azimuthal angle between heavy-flavour decay electrons and charged hadrons. Perturbative QCD calculations agree with the measured cross section within the experimental and theoretical uncertainties. The integrated visible cross section, σbe=3.47±0.40(stat)+1.121.33(sys)±0.07(norm)μσbe=3.47±0.40(stat)+1.121.33(sys)±0.07(norm)μb, was extrapolated to full phase space using Fixed Order plus Next-to-Leading Log (FONLL) predictions to obtain the total bˉb production cross section, σbˉb=130±15.1(stat)+42.149.8(sys)+3.43.1(extr)±2.5(norm)±4.4(BR)μb.
Copyright/License preprint: © 2014-2024 CERN (License: CC-BY-3.0)
publication: © 2014-2024 CERN (License: CC-BY-3.0), sponsored by SCOAP³



Corresponding record in: Inspire
Email contact: h.oeschler@gsi.de


 Datensatz erzeugt am 2014-05-19, letzte Änderung am 2024-11-27


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