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

Lawrence Livermore National Laboratory
Czech Technical University in Prague
Nuclear Physics Institute of the Cas
Panjab University
European Organization for Nuclear Research
Politecnico di Torino
INFN Sez. di Torino
DIBINEM, Alma Mater Studiorum, University of Bologna
The Indian Institute of Technology Bombay
VECC Kolkata
Aligarh Muslim University
COMSATS University Islamabad
Korea Institute of Science and Technology Information
Yale University
ITEP
National Research Centre "Kurchatov Institute"
University of Birmingham
Centro Fermi
Istituto Nazionale di Fisica Nucleare, Sezione di Bologna
Bogolyubov Institute for Theoretical Physics Nasu
Bergen University College
Frankfurt Institute for Advanced Studies
University of Bergen
University of St. Petersburg
University of São Paulo
Horia Hulubei National Institute of Physics and Nuclear Engineering
GSI Helmholtz Center
Heidelberg University
University of Münster
Rudjer Boskovic Institute
Dipartimento di Fisica 'G. Galilei' and INFN
l'institut du thorax
Johann Wolfgang Goethe University
Universidad de Santiago de Compostela
University of Oslo
Oak Ridge National Laboratory
University of Cape Town
Laboratori Nazionali Del Sud
Gangneung-Wonju National University
LAIC, Université d'Auvergne
University of Jammu
Commissariat A l'Énergie Atomique et Aux Énergies Alternatives, Centre de Saclay, IRFU
Institute of Physics Bhubaneswar
Università di Catania
Istituto Nazionale di Fisica Nucleare, Sezione di Bari
Hungarian Academy of Sciences
Henryk Niewodniczanski Institute of Nuclear Physics Polish Academy of Sciences
Joint Inst. for Nuclear Research
Niels Bohr Institutet
Universite de Strasbourg
University of Houston
Universidad Nacional Autónoma de México
Wayne State University
National Research Nuclear University MEPhI
Petersburg Nuclear Phys. Inst.
St. Petersburg Technical University
Technical University of Munich
the University of Utrecht
Gauhati University
Tsukuba University
INFN, Laboratori Nazionali Di Frascati
CIEMAT Energy Department
Lawrence Berkeley National Laboratory
Institute for High Energy Physics (IHEP)
P. J. Safarik University
Pusan National University
National Research Foundation
Science Park 105
Purdue University
Russian Federal Nuclear Center (VNIIEF)
Central China Normal University
Pontifical Catholic University of Peru San Miguel
INFN- Sezione di Trieste
University of Cagliari
Centro de Aplicaciones Tecnológicas y Desarrollo Nuclear
University of Jyväskylä
Saha Institute of Nuclear Physics
Creighton University
Université Claude Bernard Lyon 1
University of Campinas
Lund University
Sezione INFN di Cagliari
University of Grenoble Alpes
University Paris-Sud
CINVESTAV
Sezione INFN di Roma La Sapienza
Benemerita Universidad Autonoma de Puebla
Instituto de Ciencias Nucleares de la UNAM
Institute of Space Sciences
Bose Institute
National Center for Nuclear Research (NCBJ)
University of Helsinki and Helsinki Institute of Physics
University of Liverpool
Institute for Nuclear Research of the Russian Academy of Sciences
University of Athens
Ohio State University
Chicago State University
University of Split
Warsaw Institute of Technology
A.I. Alikhanyan National Science Laboratory (YerPhi)
University of Tokyo
University of Tübingen
Institute of Physics of the Czech Academy of Sciences
Sejong University
Institute of Experimental Physics Slovak Academy of Sciences
Yonsei University
KTO Karatay University
Fachhochschule 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
Moscow State University
University of Tennessee
Dipartimento di Fisica
Comenius University
Laboratory for Thermal Engineering and Energy
Indian Institute of Technology Indore
National Institute of Science Education and Research
Konkuk University
Budker Institute of Nuclear Physics (SB RAS)
University of Zagreb
University of Rajasthan
Wrocław University
Laboratori Nazionali di Legnaro
Hiroshima University
University of Kansas
CNRS/IN2P3 and Université Paris 11

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

46 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 B
Volume	738
DOIs	https://doi.org/10.1016/j.physletb.2014.09.026
State	Published - 10 Nov 2014
Externally published	Yes

Keywords

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

Access to Document

10.1016/j.physletb.2014.09.026

Cite this

@article{83a3df65483c4f01832d390d89738bc2,

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 Baek, \{Y. W.\}",

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 B",

issn = "0370-2693",

publisher = "Elsevier B.V.",

}

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 - Baek, Y. W.

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 B

JF - Physics Letters B

ER -

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

Abstract

Keywords

Access to Document

Other files and links

Fingerprint

Cite this