Measurement of electrons from beauty hadron decays in pp collisions at √s=7 TeV

ALICE Collaboration

doi:10.1016/j.physletb.2013.01.069

Measurement of electrons from beauty hadron decays in pp collisions at √s=7 TeV

ALICE Collaboration

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

75 Scopus citations

Abstract

The production cross section of electrons from semileptonic decays of beauty hadrons was measured at mid-rapidity (|y|<0.8) in the transverse momentum range 1<p_T<8 GeV/c with the ALICE experiment at the CERN LHC in pp collisions at a center of mass energy s=7 TeV using an integrated luminosity of 2.2 nb⁻¹. Electrons from beauty hadron decays were selected based on the displacement of the decay vertex from the collision vertex. A perturbative QCD calculation agrees with the measurement within uncertainties. The data were extrapolated to the full phase space to determine the total cross section for the production of beauty quark–antiquark pairs.

Original language	English
Pages (from-to)	13-23
Number of pages	11
Journal	Physics Letters B
Volume	721
Issue number	1-3
DOIs	https://doi.org/10.1016/j.physletb.2013.01.069
State	Published - Apr 10 2013
Externally published	Yes

Funding

The ALICE Collaboration would like to thank all its engineers and technicians for their invaluable contributions to the construction of the experiment and the CERN accelerator teams for the outstanding performance of the LHC complex. The ALICE Collaboration would like to thank M. Cacciari for providing the FONLL pQCD predictions for the cross sections of electrons from heavy-flavour hadron decays. The ALICE Collaboration acknowledges the following funding agencies for their support in building and running the ALICE detector: State Committee of Science , Calouste Gulbenkian Foundation from Lisbon and Swiss Fonds Kidagan , Armenia; Conselho Nacional de Desenvolvimento Cient\u00EDfico e Tecnol\u00F3gico (CNPq) , Financiadora de Estudos e Projetos (FINEP) , Funda\u00E7\u00E3o de Amparo \u00E0 Pesquisa do Estado de S\u00E3o Paulo (FAPESP) ; National Natural Science Foundation of China (NSFC) , the Chinese Ministry of Education (CMOE) and the Ministry of Science and Technology of China (MSTC) ; Ministry of Education and Youth of the Czech Republic ; Danish Natural Science Research Council , the Carlsberg Foundation and the Danish National Research Foundation ; The European Research Council under the European Community\u02BCs Seventh Framework Programme ; Helsinki Institute of Physics and the Academy of Finland ; French CNRS-IN2P3 , the \u2018Region Pays de Loire\u2019 , \u2018Region Alsace\u2019 , \u2018Region Auvergne\u2019 and CEA , France; German BMBF and the Helmholtz Association ; General Secretariat for Research and Technology , Ministry of Development , Greece; Hungarian OTKA and National Office for Research and Technology (NKTH) ; Department of Atomic Energy and Department of Science and Technology of the Government of India ; Istituto Nazionale di Fisica Nucleare (INFN) and Centro Fermi \u2013 Museo Storico della Fisica e Centro Studi e Ricerche \u201CEnrico Fermi\u201D , Italy; MEXT Grant-in-Aid for Specially Promoted Research , Japan; Joint Institute for Nuclear Research , Dubna; National Research Foundation of Korea (NRF) ; CONACYT , DGAPA , M\u00E9xico, ALFA-EC and the HELEN Program (High-Energy Physics Latin-American\u2013European Network) ; Stichting voor Fundamenteel Onderzoek der Materie (FOM) and the Nederlandse Organisatie voor Wetenschappelijk Onderzoek (NWO) , Netherlands; Research Council of Norway (NFR) ; Polish Ministry of Science and Higher Education ; National Authority for Scientific Research \u2013 NASR (Autoritatea Na\u0163ional\u0103 pentru Cercetare \u015Etiin\u0163ific\u0103 \u2013 ANCS) ; Ministry of Education and Science of Russian Federation , International Science and Technology Center , Russian Academy of Sciences , Russian Federal Agency of Atomic Energy , Russian Federal Agency for Science and Innovations and CERN-INTAS ; Ministry of Education of Slovakia ; Department of Science and Technology , South Africa; CIEMAT , EELA , Ministerio de Educaci\u00F3n y Ciencia of Spain , Xunta de Galicia (Conseller\u00EDa de Educaci\u00F3n) , CEADEN , Cubaenerg\u00EDa , Cuba, and IAEA (International Atomic Energy Agency) ; Swedish Research Council (VR) and Knut & Alice Wallenberg Foundation (KAW) ; Ukraine Ministry of Education and Science ; United Kingdom Science and Technology Facilities Council (STFC) ; The United States Department of Energy , the United States National Science Foundation , the State of Texas , and the State of Ohio .

Keywords

ALICE experiment
Beauty production
Heavy flavor production
LHC
Single electrons
pp collisions

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10.1016/j.physletb.2013.01.069

Cite this

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title = "Measurement of electrons from beauty hadron decays in pp collisions at √s=7 TeV",

abstract = "The production cross section of electrons from semileptonic decays of beauty hadrons was measured at mid-rapidity (|y|<0.8) in the transverse momentum range 1T<8 GeV/c with the ALICE experiment at the CERN LHC in pp collisions at a center of mass energy s=7 TeV using an integrated luminosity of 2.2 nb−1. Electrons from beauty hadron decays were selected based on the displacement of the decay vertex from the collision vertex. A perturbative QCD calculation agrees with the measurement within uncertainties. The data were extrapolated to the full phase space to determine the total cross section for the production of beauty quark–antiquark pairs.",

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

author = "{ALICE Collaboration} and B. Abelev and J. Adam and D. Adamov{\'a} and Adare, {A. M.} and Aggarwal, {M. M.} and {Aglieri Rinella}, G. and Agocs, {A. G.} and A. Agostinelli and {Aguilar Salazar}, S. and Z. Ahammed and N. Ahmad and {Ahmad Masoodi}, A. and Ahn, {S. A.} and Ahn, {S. U.} and A. Akindinov and D. Aleksandrov and B. Alessandro and {Alfaro Molina}, R. and A. Alici and A. Alkin and {Almar{\'a}z Avi{\~n}a}, E. and J. Alme and T. Alt and V. Altini and S. Altinpinar and I. Altsybeev and C. Andrei and A. Andronic and V. Anguelov and J. Anielski and C. Anson and T. Anti{\v c}i{\'c} and F. Antinori and P. Antonioli and L. Aphecetche and H. Appelsh{\"a}user and N. Arbor and S. Arcelli and A. Arend and N. Armesto and R. Arnaldi and T. Aronsson and Arsene, {I. C.} and M. Arslandok and A. Asryan and A. Augustinus and R. Averbeck and Awes, {T. C.} and I. Garishvili and Read, {K. F.}",

note = "Publisher Copyright: {\textcopyright} 2013 CERN",

year = "2013",

month = apr,

day = "10",

doi = "10.1016/j.physletb.2013.01.069",

language = "English",

volume = "721",

pages = "13--23",

journal = "Physics Letters B",

issn = "0370-2693",

publisher = "Elsevier",

number = "1-3",

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TY - JOUR

T1 - Measurement of electrons from beauty hadron decays in pp collisions at √s=7 TeV

AU - ALICE Collaboration

AU - Abelev, B.

AU - Adam, J.

AU - Adamová, D.

AU - Adare, A. M.

AU - Aggarwal, M. M.

AU - Aglieri Rinella, G.

AU - Agocs, A. G.

AU - Agostinelli, A.

AU - Aguilar Salazar, S.

AU - Ahammed, Z.

AU - Ahmad, N.

AU - Ahmad Masoodi, A.

AU - Ahn, S. A.

AU - Ahn, S. U.

AU - Akindinov, A.

AU - Aleksandrov, D.

AU - Alessandro, B.

AU - Alfaro Molina, R.

AU - Alici, A.

AU - Alkin, A.

AU - Almaráz Aviña, E.

AU - Alme, J.

AU - Alt, T.

AU - Altini, V.

AU - Altinpinar, S.

AU - Altsybeev, I.

AU - Andrei, C.

AU - Andronic, A.

AU - Anguelov, V.

AU - Anielski, J.

AU - Anson, C.

AU - Antičić, T.

AU - Antinori, F.

AU - Antonioli, P.

AU - Aphecetche, L.

AU - Appelshäuser, H.

AU - Arbor, N.

AU - Arcelli, S.

AU - Arend, A.

AU - Armesto, N.

AU - Arnaldi, R.

AU - Aronsson, T.

AU - Arsene, I. C.

AU - Arslandok, M.

AU - Asryan, A.

AU - Augustinus, A.

AU - Averbeck, R.

AU - Awes, T. C.

AU - Garishvili, I.

AU - Read, K. F.

PY - 2013/4/10

Y1 - 2013/4/10

N2 - The production cross section of electrons from semileptonic decays of beauty hadrons was measured at mid-rapidity (|y|<0.8) in the transverse momentum range 1T<8 GeV/c with the ALICE experiment at the CERN LHC in pp collisions at a center of mass energy s=7 TeV using an integrated luminosity of 2.2 nb−1. Electrons from beauty hadron decays were selected based on the displacement of the decay vertex from the collision vertex. A perturbative QCD calculation agrees with the measurement within uncertainties. The data were extrapolated to the full phase space to determine the total cross section for the production of beauty quark–antiquark pairs.

AB - The production cross section of electrons from semileptonic decays of beauty hadrons was measured at mid-rapidity (|y|<0.8) in the transverse momentum range 1T<8 GeV/c with the ALICE experiment at the CERN LHC in pp collisions at a center of mass energy s=7 TeV using an integrated luminosity of 2.2 nb−1. Electrons from beauty hadron decays were selected based on the displacement of the decay vertex from the collision vertex. A perturbative QCD calculation agrees with the measurement within uncertainties. The data were extrapolated to the full phase space to determine the total cross section for the production of beauty quark–antiquark pairs.

KW - ALICE experiment

KW - Beauty production

KW - Heavy flavor production

KW - LHC

KW - Single electrons

KW - pp collisions

UR - http://www.scopus.com/inward/record.url?scp=84885024526&partnerID=8YFLogxK

U2 - 10.1016/j.physletb.2013.01.069

DO - 10.1016/j.physletb.2013.01.069

M3 - Article

AN - SCOPUS:84885024526

SN - 0370-2693

VL - 721

SP - 13

EP - 23

JO - Physics Letters B

JF - Physics Letters B

IS - 1-3

ER -

Measurement of electrons from beauty hadron decays in pp collisions at √s=7 TeV

Abstract

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Keywords

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