Beauty production in pp collisions at √s=2.76 TeV measured via semi-electronic decays
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| Title: | Beauty production in pp collisions at √s=2.76 TeV measured via semi-electronic decays |
| Author: | ALICE Collaboration Armesto Pérez, Néstor González Ferreiro, Elena Pajares Vales, Carlos Salgado López, Carlos Alberto |
| Affiliation: | Universidade de Santiago de Compostela. Departamento de Física de Partículas Universidade de Santiago de Compostela. Instituto Galego de Física de Altas Enerxías (IGFAE) |
| Subject: | LHC | ALICE experiment | Pp collisions | Single electrons | Heavy-flavour production | Beauty production | |
| Date of Issue: | 2014 |
| Publisher: | Elsevier |
| Citation: | Abelev, B., Adam, J., Adamová, D., Aggarwal, M. M., Rinella, G. A., Agnello, M., ... & Ahmed, I. (2014). Beauty production in pp collisions at √s= 2.76 TeV measured via semi-electronic decays. Physics letters B, 738, 97-108 |
| 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| <0.8and transverse momentum 1 <pT<10GeV/c, in pp collisions at √s=2.76TeV. 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 predictions agree with the measured cross section within the experimental and theoretical uncertainties. The integrated visible cross section, σb→e=3.47 ±0.40(stat)+1.12−1.33(sys) ±0.07(norm)μb, was extrapolated to full phase space using Fixed Order plus Next-to-Leading Log (FONLL) calculations to obtain the total b¯bproduction cross section, σb¯ b=130 ±15.1(stat)+42.1−49.8(sys)+3.4−3.1(extr) ±2.5(norm) ±4.4(BR)μb. |
| Publisher version: | https://doi.org/10.1016/j.physletb.2014.09.026 |
| URI: | http://hdl.handle.net/10347/21978 |
| DOI: | 10.1016/j.physletb.2014.09.026 |
| ISSN: | 0370-2693 |
| E-ISSN: | 1873-2445 |
| Rights: | © 2014 The Authors. Published by Elsevier B.V. This is an open access article under the CC BY license (http://creativecommons.org/licenses/by/3.0/). Funded by SCOAP3. |
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Except where otherwise noted, this item's license is described as © 2014 The Authors. Published by Elsevier B.V. This is an open access article under the CC BY license (http://creativecommons.org/licenses/by/3.0/). Funded by SCOAP3.