Beauty production in pp collisions at √s=2.76 TeV measured via semi-electronic decays

ALICE Collaboration

doi:10.1016/j.physletb.2014.09.026

Beauty production in pp collisions at √s=2.76 TeV measured via semi-electronic decays

ALICE Collaboration

Sección de Física

Lawrence Livermore National Laboratory
Faculty of Nuclear Sciences and Physical Engineering
Czech Academy of Sciences
Panjab University
CERN
Polytechnic University of Turin
National Institute for Nuclear Physics
University of Bologna
Indian Institute of Technology Bombay
Variable Energy Cyclotron Centre
Aligarh Muslim University
COMSATS University Islamabad
Korea Institute of Science and Technology Information
Yale University
Alikhanov Institute for Theoretical and Experimental Physics
Russian Research Centre Kurchatov Institute
University of Birmingham
Enrico Fermi Center
NASU - Bogolyubov Institute for Theoretical Physics
Western Norway University of Applied Sciences
Goethe University Frankfurt
University of Bergen
St. Petersburg State University
Universidade de São Paulo
Horia Hulubei National Institute of Physics and Nuclear Engineering
GSI Helmholtz Centre for Heavy Ion Research
Heidelberg University
University of Münster
Ruder Boskovic Institute
Nantes Université
Universidad de Santiago de Compostela
University of Oslo
Oak Ridge National Laboratory
University of Cape Town
Gangneung-Wonju National University
Université Clermont Auvergne
University of Jammu
IRFU
Institute of Physics Bhubaneswar
University of Catania
Hungarian Academy of Sciences
Henryk Niewodniczanski Institute of Nuclear Physics of the Polish Academy of Sciences
Joint Institute for Nuclear Research
University of Copenhagen
Université de Strasbourg
University of Houston
Universidad Nacional Autónoma de México
Wayne State University
Moscow Engineering Physics Institute
RAS - Saint Petersburg Nuclear Physics Institute
Peter the Great St. Petersburg Polytechnic University
Technical University of Munich
Utrecht University
Gauhati University
University of Tsukuba
CIEMAT
Lawrence Berkeley National Laboratory
Institute for High Energy Physics
Pavol Jozef Šafárik University
Pusan National University
National Research Foundation
National Institute for Subatomic Physics
Purdue University
All-Russian Scientific Research Institute of Experimental Physics
Central China Normal University
Pontificia Universidad Católica del Perú
University of Cagliari
Centro de Aplicaciones Tecnológicas y Desarrollo Nuclear
University of Jyväskylä
Saha Institute of Nuclear Physics
Creighton University
Universite Claude Bernard Lyon 1
Universidade Estadual de Campinas
Lund University
Université Grenoble Alpes
Université Paris-Saclay
Centro de Investigacion y de Estudios Avanzados del Instituto Politécnico Nacional
Benemerita Universidad Autonoma de Puebla
Institute for Space Sciences
Bose Institute
National Centre for Nuclear Research
University of Helsinki
University of Liverpool
RAS - Institute for Nuclear Research
National and Kapodistrian University of Athens
Ohio State University
Chicago State University
University of Split
Warsaw University of Technology
A. Alikhanian Yerevan Institute of Physics
The University of Tokyo
University of Tübingen
Sejong University
Slovak Academy of Sciences
Yonsei University
KTO Karatay University
University of Applied Sciences Worms
California Polytechnic State University, San Luis Obispo
University of Texas at Austin
Suranaree University of Technology
Inha University
University of South-Eastern Norway
STFC Daresbury Laboratory
Universidad Autonoma de Sinaloa
Lomonosov Moscow State University
University of Tennessee, Knoxville
University of Rome La Sapienza
Comenius University
University of Belgrade
Indian Institute of Technology Indore
National Institute of Science Education and Research
Konkuk University
RAS - Budker Institute of Nuclear Physics
University of Zagreb
University of Rajasthan
University of Wrocław
Laboratori Nazionali di Legnaro
Hiroshima University
University of Kansas
Centre de calcul de l'IN2P3

Research output: Contribution to journal › Article › peer-review

48 Scopus citations

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 and transverse momentum 1<p_T<10 GeV/c, in pp collisions at 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 predictions agree with the measured cross section within the experimental and theoretical uncertainties. The integrated visible cross section, σ_b→e=3.47±0.40(stat)_−1.33 ^+1.12(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 bb¯ production cross section, σ_bb¯=130±15.1(stat)_−49.8 ^+42.1(sys)_−3.1 ^+3.4(extr)±2.5(norm)±4.4(BR) μb.

Original language	English
Pages (from-to)	97-108
Number of pages	12
Journal	Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
Volume	738
DOIs	https://doi.org/10.1016/j.physletb.2014.09.026
State	Published - 10 Nov 2014

Keywords

ALICE experiment
Beauty production
Heavy-flavour production
LHC
Single electrons
pp collisions

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10.1016/j.physletb.2014.09.026

Cite this

@article{6491657262b540b3a3ec098fce0544fb,

title = "Beauty production in pp collisions at √s=2.76 TeV measured via semi-electronic decays",

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 and transverse momentum 1T<10 GeV/c, in pp collisions at 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 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)−1.33 +1.12(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 bb¯ production cross section, σbb¯=130±15.1(stat)−49.8 +42.1(sys)−3.1 +3.4(extr)±2.5(norm)±4.4(BR) μb.",

keywords = "ALICE experiment, Beauty production, Heavy-flavour production, LHC, Single electrons, pp collisions",

author = "\{ALICE Collaboration\} and B. Abelev and J. Adam and D. Adamov{\'a} and Aggarwal, \{M. M.\} and \{Aglieri Rinella\}, G. and M. Agnello and A. Agostinelli and N. Agrawal and Z. Ahammed and N. Ahmad and I. Ahmed and Ahn, \{S. U.\} and Ahn, \{S. A.\} and I. Aimo and S. Aiola and M. Ajaz and A. Akindinov and Alam, \{S. N.\} and D. Aleksandrov and B. Alessandro and D. Alexandre and A. Alici and A. Alkin and J. Alme and T. Alt and S. Altinpinar and I. Altsybeev and \{Alves Garcia Prado\}, C. and C. Andrei and A. Andronic and V. Anguelov and J. Anielski and T. Anti{\v c}i{\'c} and F. Antinori and P. Antonioli and L. Aphecetche and H. Appelsh{\"a}user and S. Arcelli and N. Armesto and R. Arnaldi and T. Aronsson and Arsene, \{I. C.\} and M. Arslandok and A. Augustinus and R. Averbeck and Awes, \{T. C.\} and Azmi, \{M. D.\} and M. Bach and A. Badal{\`a} and Gago, \{A. M.\}",

note = "Publisher Copyright: {\textcopyright} 2014",

year = "2014",

month = nov,

day = "10",

doi = "10.1016/j.physletb.2014.09.026",

language = "English",

volume = "738",

pages = "97--108",

journal = "Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics",

issn = "0370-2693",

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TY - JOUR

T1 - Beauty production in pp collisions at √s=2.76 TeV measured via semi-electronic decays

AU - ALICE Collaboration

AU - Abelev, B.

AU - Adam, J.

AU - Adamová, D.

AU - Aggarwal, M. M.

AU - Aglieri Rinella, G.

AU - Agnello, M.

AU - Agostinelli, A.

AU - Agrawal, N.

AU - Ahammed, Z.

AU - Ahmad, N.

AU - Ahmed, I.

AU - Ahn, S. U.

AU - Ahn, S. A.

AU - Aimo, I.

AU - Aiola, S.

AU - Ajaz, M.

AU - Akindinov, A.

AU - Alam, S. N.

AU - Aleksandrov, D.

AU - Alessandro, B.

AU - Alexandre, D.

AU - Alici, A.

AU - Alkin, A.

AU - Alme, J.

AU - Alt, T.

AU - Altinpinar, S.

AU - Altsybeev, I.

AU - Alves Garcia Prado, C.

AU - Andrei, C.

AU - Andronic, A.

AU - Anguelov, V.

AU - Anielski, J.

AU - Antičić, T.

AU - Antinori, F.

AU - Antonioli, P.

AU - Aphecetche, L.

AU - Appelshäuser, H.

AU - Arcelli, S.

AU - Armesto, N.

AU - Arnaldi, R.

AU - Aronsson, T.

AU - Arsene, I. C.

AU - Arslandok, M.

AU - Augustinus, A.

AU - Averbeck, R.

AU - Awes, T. C.

AU - Azmi, M. D.

AU - Bach, M.

AU - Badalà, A.

AU - Gago, A. M.

PY - 2014/11/10

Y1 - 2014/11/10

N2 - 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 and transverse momentum 1T<10 GeV/c, in pp collisions at 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 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)−1.33 +1.12(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 bb¯ production cross section, σbb¯=130±15.1(stat)−49.8 +42.1(sys)−3.1 +3.4(extr)±2.5(norm)±4.4(BR) μb.

AB - 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 and transverse momentum 1T<10 GeV/c, in pp collisions at 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 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)−1.33 +1.12(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 bb¯ production cross section, σbb¯=130±15.1(stat)−49.8 +42.1(sys)−3.1 +3.4(extr)±2.5(norm)±4.4(BR) μb.

KW - ALICE experiment

KW - Beauty production

KW - Heavy-flavour production

KW - LHC

KW - Single electrons

KW - pp collisions

UR - https://www.scopus.com/pages/publications/85040639385

U2 - 10.1016/j.physletb.2014.09.026

DO - 10.1016/j.physletb.2014.09.026

M3 - Article

AN - SCOPUS:85040639385

SN - 0370-2693

VL - 738

SP - 97

EP - 108

JO - Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics

JF - Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics

ER -

Beauty production in pp collisions at √s=2.76 TeV measured via semi-electronic decays

Abstract

Keywords

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