Measurement of the Z boson production cross-section in pp collisions at $$ \sqrt{s} $$ = 5.02 TeV
Journal of High Energy Physics, vol. 2024
Abstract
A bstract The first measurement of the Z boson production cross-section at centre-of-mass energy $$ \sqrt{s} $$ s = 5 . 02 TeV in the forward region is reported, using pp collision data collected by the LHCb experiment in year 2017, corresponding to an integrated luminosity of 100 ± 2 pb − 1 . The production cross-section is measured for final-state muons in the pseudorapidity range 2 . 0 < η < 4 . 5 with transverse momentum p T > 20 GeV/ c . The integrated cross-section is determined to be $$ {\sigma}_{Z\to \mu +\mu -}=39.6\pm 0.7\left(\textrm{stat}\right)\pm 0.6\left(\textrm{syst}\right)\pm 0.8\left(\textrm{lumi}\right)\textrm{pb} $$ σ Z → μ + μ − = 39.6 ± 0.7 stat ± 0.6 syst ± 0.8 lumi pb for the di-muon invariant mass in the range 60 < M μμ < 120 GeV/ c 2 . This result and the differential cross-section results are in good agreement with theoretical predictions at next-to-next-to-leading order in the strong coupling constant. Based on a previous LHCb measurement of the Z boson production cross-section in p Pb collisions at $$ \sqrt{s_{NN}} $$ s NN = 5 . 02 TeV, the nuclear modification factor R p Pb is measured for the first time at this energy. The measured values are $$ {1.2}_{-0.3}^{+0.5} $$ 1.2 − 0.3 + 0.5 (stat) ± 0 . 1(syst) in the forward region (1.53 < $$ {y}_{\mu}^{\ast } $$ y μ ∗ < 4 . 03) and $$ {3.6}_{-0.9}^{+1.6} $$ 3.6 − 0.9 + 1.6 (stat) ± 0 . 2(syst) in the backward region ( − 4 . 97 < $$ {y}_{\mu}^{\ast } $$ y μ ∗ < − 2 . 47), where $$ {y}_{\mu}^{\ast } $$ y μ ∗
Authors 99
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National Institute for Subatomic Physics
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Nikhef National Institute for Subatomic Physics
Nikhef National Institute for Subatomic Physics, Amsterdam, Netherlands
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University of Warwick
Department of Physics, University of Warwick, Coventry, United Kingdom
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Physik-Institut, Universität Zürich
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University of Warwick
Department of Physics, University of Warwick, Coventry, United Kingdom
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University of Liverpool
Oliver Lodge Laboratory, University of Liverpool, Liverpool, United Kingdom
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Universidade de Santiago de Compostela
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Instituto Galego de Física de Altas Enerxías (IGFAE), Universidade de Santiago de Compostela
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University of Bristol
H.H. Wills Physics Laboratory, University of Bristol, Bristol, United Kingdom
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Uppsala University
Department of Physics and Astronomy, Uppsala University, Uppsala, Sweden
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Centre National de la Recherche Scientifique · Institut National de Physique Nucléaire et de Physique des Particules · Université Clermont Auvergne
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Université Clermont Auvergne, CNRS/IN2P3, LPC
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European Organization for Nuclear Research
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European Organization for Nuclear Research (CERN)
European Organization for Nuclear Research (CERN), Geneva, Switzerland
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University of Michigan
University of Michigan, Ann Arbor, MI, United States
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Centre National de la Recherche Scientifique · Institut National de Physique Nucléaire et de Physique des Particules · Université Clermont Auvergne
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Université Clermont Auvergne, CNRS/IN2P3, LPC
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University of Cincinnati
University of Cincinnati, Cincinnati, OH, United States
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National Institute for Subatomic Physics
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Nikhef National Institute for Subatomic Physics
Nikhef National Institute for Subatomic Physics, Amsterdam, Netherlands
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Istituto Nazionale di Fisica Nucleare, Laboratori Nazionali di Frascati · Istituto Nazionale di Fisica Nucleare
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INFN Laboratori Nazionali di Frascati
INFN Laboratori Nazionali di Frascati, Frascati, Italy
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Fakultät Physik, Technische Universität Dortmund
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European Organization for Nuclear Research
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European Organization for Nuclear Research (CERN)
European Organization for Nuclear Research (CERN), Geneva, Switzerland
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University of Glasgow
School of Physics and Astronomy, University of Glasgow, Glasgow, United Kingdom
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Institut de Ciències del Cosmos · Universitat de Barcelona
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ICCUB, Universitat de Barcelona
ICCUB, Universitat de Barcelona, Barcelona, Spain
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University of Manchester
Department of Physics and Astronomy, University of Manchester, Manchester, United Kingdom
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University of Cambridge
Cavendish Laboratory, University of Cambridge, Cambridge, United Kingdom
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Centre National de la Recherche Scientifique · Sorbonne Université · Institut National de Physique Nucléaire et de Physique des Particules · Laboratoire de Physique Nucléaire et de Hautes Énergies
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LPNHE, Sorbonne Université, Paris Diderot Sorbonne Paris Cité, CNRS/IN2P3
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Universidade Federal do Rio de Janeiro
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Universidade Federal do Rio de Janeiro (UFRJ)
Universidade Federal do Rio de Janeiro (UFRJ), Rio de Janeiro, Brazil
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University of Bristol
H.H. Wills Physics Laboratory, University of Bristol, Bristol, United Kingdom
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Centre National de la Recherche Scientifique · Université Paris-Saclay · Institut National de Physique Nucléaire et de Physique des Particules · European Organization for Nuclear Research · Laboratoire de Physique des 2 Infinis Irène Joliot-Curie
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European Organization for Nuclear Research (CERN)
Université Paris-Saclay, CNRS/IN2P3, IJCLab
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Tsinghua University · Peking University
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Peking University
Center for High Energy Physics, Tsinghua University, Beijing, China
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Istituto Nazionale di Fisica Nucleare, Sezione di Firenze
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INFN Sezione di Firenze
INFN Sezione di Firenze, Firenze, Italy
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Physik-Institut, Universität Zürich
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Physik-Institut, Universität Zürich
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Istituto Nazionale di Fisica Nucleare, Sezione di Ferrara
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INFN Sezione di Ferrara
INFN Sezione di Ferrara, Ferrara, Italy
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Syracuse University
Syracuse University, Syracuse, NY, United States
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Institute of High Energy Physics · University of Chinese Academy of Sciences
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University of Chinese Academy of Sciences
Institute Of High Energy Physics (IHEP), Beijing, China
University of Chinese Academy of Sciences, Beijing, China
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University of Rome Tor Vergata · Istituto Nazionale di Fisica Nucleare, Roma Tor Vergata
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INFN Sezione di Roma Tor Vergata
Università di Roma Tor Vergata
INFN Sezione di Roma Tor Vergata, Roma, Italy
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Syracuse University
Syracuse University, Syracuse, NY, United States
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Centre National de la Recherche Scientifique · Institut National de Physique Nucléaire et de Physique des Particules · Aix-Marseille Université · Centre de physique des particules de Marseille
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Aix Marseille Univ, CNRS/IN2P3, CPPM
Aix Marseille Univ, CNRS/IN2P3, CPPM, Marseille, France
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Massachusetts Institute of Technology
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Massachusetts Institute of Technology
Massachusetts Institute of Technology, Cambridge, MA, United States
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Centre National de la Recherche Scientifique · Institut National de Physique Nucléaire et de Physique des Particules · École Polytechnique · Laboratoire Leprince-Ringuet · Institut Polytechnique de Paris
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Laboratoire Leprince-Ringuet, CNRS/IN2P3, Ecole Polytechnique, Institut Polytechnique de Paris
Laboratoire Leprince-Ringuet, CNRS/IN2P3, Ecole Polytechnique, Institut Polytechnique de Paris, Palaiseau, France
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Physikalisches Institut, Ruprecht-Karls-Universität Heidelberg
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École Polytechnique Fédérale de Lausanne
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Institute of Physics, Ecole Polytechnique Fédérale de Lausanne (EPFL)
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University of Warwick
Department of Physics, University of Warwick, Coventry, United Kingdom
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Centre National de la Recherche Scientifique · Sorbonne Université · Institut National de Physique Nucléaire et de Physique des Particules · Laboratoire de Physique Nucléaire et de Hautes Énergies
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LPNHE, Sorbonne Université, Paris Diderot Sorbonne Paris Cité, CNRS/IN2P3
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Universidade de Santiago de Compostela
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Instituto Galego de Física de Altas Enerxías (IGFAE), Universidade de Santiago de Compostela
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Centre National de la Recherche Scientifique · Institut National de Physique Nucléaire et de Physique des Particules · École Polytechnique · Laboratoire Leprince-Ringuet · Institut Polytechnique de Paris
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Laboratoire Leprince-Ringuet, CNRS/IN2P3, Ecole Polytechnique, Institut Polytechnique de Paris
Laboratoire Leprince-Ringuet, CNRS/IN2P3, Ecole Polytechnique, Institut Polytechnique de Paris, Palaiseau, France
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Istituto Nazionale di Fisica Nucleare, Sezione di Ferrara · European Organization for Nuclear Research
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European Organization for Nuclear Research (CERN)
INFN Sezione di Ferrara
European Organization for Nuclear Research (CERN), Geneva, Switzerland
INFN Sezione di Ferrara, Ferrara, Italy
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Centro Brasileiro de Pesquisas Físicas
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Centro Brasileiro de Pesquisas Físicas (CBPF)
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Istituto Nazionale di Fisica Nucleare, Sezione di Firenze · University of Florence
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INFN Sezione di Firenze
Università di Firenze
INFN Sezione di Firenze, Firenze, Italy
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Pontifícia Universidade Católica do Rio de Janeiro
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Pontifícia Universidade Católica do Rio de Janeiro (PUC-Rio)
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University of Manchester
Department of Physics and Astronomy, University of Manchester, Manchester, United Kingdom
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Centre National de la Recherche Scientifique · Université Paris-Saclay · Institut National de Physique Nucléaire et de Physique des Particules · Laboratoire de Physique des 2 Infinis Irène Joliot-Curie
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Université Paris-Saclay, CNRS/IN2P3, IJCLab
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University of Edinburgh
School of Physics and Astronomy, University of Edinburgh, Edinburgh, United Kingdom
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University of Cambridge
Cavendish Laboratory, University of Cambridge, Cambridge, United Kingdom
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Institute of High Energy Physics · University of Chinese Academy of Sciences
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Institute Of High Energy Physics (IHEP), Beijing, China
University of Chinese Academy of Sciences, Beijing, China
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I. Physikalisches Institut, RWTH Aachen University
I. Physikalisches Institut, RWTH Aachen University, Aachen, Germany
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Istituto Nazionale di Fisica Nucleare, Sezione di Pisa · Scuola Normale Superiore
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INFN Sezione di Pisa
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Scuola Normale Superiore, Pisa, Italy
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Institute for High Energy Physics · Institute of High Energy Physics
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Institute Of High Energy Physics (IHEP)
Institute Of High Energy Physics (IHEP), Beijing, China
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Fakultät Physik, Technische Universität Dortmund
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École Polytechnique Fédérale de Lausanne
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Institute of Physics, Ecole Polytechnique Fédérale de Lausanne (EPFL)
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University of Warwick
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Fakultät Physik, Technische Universität Dortmund
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Istituto Nazionale di Fisica Nucleare, Sezione di Pisa
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INFN Sezione di Pisa
INFN Sezione di Pisa, Pisa, Italy
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Centro Brasileiro de Pesquisas Físicas
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Centro Brasileiro de Pesquisas Físicas (CBPF)
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Syracuse University
Syracuse University, Syracuse, NY, United States
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Universidade de Santiago de Compostela
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Instituto Galego de Física de Altas Enerxías (IGFAE), Universidade de Santiago de Compostela
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Physik-Institut, Universität Zürich
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Institute of High Energy Physics
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Institute Of High Energy Physics (IHEP), Beijing, China
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Istituto Nazionale di Fisica Nucleare, Sezione di Genova
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INFN Sezione di Genova
INFN Sezione di Genova, Genova, Italy
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Peking University · State Key Laboratory of Nuclear Physics and Technology
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School of Physics State Key Laboratory of Nuclear Physics and Technology, Peking University, Beijing, China
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Centre National de la Recherche Scientifique · Institut National de Physique Nucléaire et de Physique des Particules · Aix-Marseille Université · Centre de physique des particules de Marseille
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Aix Marseille Univ, CNRS/IN2P3, CPPM
Aix Marseille Univ, CNRS/IN2P3, CPPM, Marseille, France
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Istituto Nazionale di Fisica Nucleare, Laboratori Nazionali di Frascati · Istituto Nazionale di Fisica Nucleare
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INFN Laboratori Nazionali di Frascati
INFN Laboratori Nazionali di Frascati, Frascati, Italy
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Centre National de la Recherche Scientifique · Sorbonne Université · Institut National de Physique Nucléaire et de Physique des Particules · Laboratoire de Physique Nucléaire et de Hautes Énergies
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LPNHE, Sorbonne Université, Paris Diderot Sorbonne Paris Cité, CNRS/IN2P3
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University of Zurich · Universitat Ramon Llull
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Physik-Institut, Universität Zürich
DS4DS, La Salle, Universitat Ramon Llull, Barcelona, Spain
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DS4DS, La Salle, Universitat Ramon Llull
DS4DS, La Salle, Universitat Ramon Llull, Barcelona, Spain
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Physikalisches Institut, Ruprecht-Karls-Universität Heidelberg
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Syracuse University
Syracuse University, Syracuse, NY, United States
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University of Manchester
Department of Physics and Astronomy, University of Manchester, Manchester, United Kingdom
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University of Padua · Istituto Nazionale di Fisica Nucleare, Sezione di Padova
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Università degli Studi di Padova, Università e INFN, Padova
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Physik-Institut, Universität Zürich
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University of Edinburgh
School of Physics and Astronomy, University of Edinburgh, Edinburgh, United Kingdom
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University of Cambridge
Cavendish Laboratory, University of Cambridge, Cambridge, United Kingdom
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Physik-Institut, Universität Zürich
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Institute of Nuclear Physics, Polish Academy of Sciences
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Henryk Niewodniczanski Institute of Nuclear Physics Polish Academy of Sciences
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Wuhan University
School of Physics and Technology, Wuhan University, Wuhan, China
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Fakultät Physik, Technische Universität Dortmund
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Istituto Nazionale di Fisica Nucleare, Sezione di Ferrara
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INFN Sezione di Ferrara
INFN Sezione di Ferrara, Ferrara, Italy
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Centre National de la Recherche Scientifique · Sorbonne Université · Institut National de Physique Nucléaire et de Physique des Particules · Laboratoire de Physique Nucléaire et de Hautes Énergies
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LPNHE, Sorbonne Université, Paris Diderot Sorbonne Paris Cité, CNRS/IN2P3
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National Institute for Subatomic Physics
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Nikhef National Institute for Subatomic Physics
Nikhef National Institute for Subatomic Physics, Amsterdam, Netherlands
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Imperial College London
Imperial College London, London, United Kingdom
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University of Cambridge
Cavendish Laboratory, University of Cambridge, Cambridge, United Kingdom
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University of Manchester
Department of Physics and Astronomy, University of Manchester, Manchester, United Kingdom
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University of Cambridge
Cavendish Laboratory, University of Cambridge, Cambridge, United Kingdom
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University of Warwick
Department of Physics, University of Warwick, Coventry, United Kingdom
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École Polytechnique Fédérale de Lausanne
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Institute of Physics, Ecole Polytechnique Fédérale de Lausanne (EPFL)
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Fakultät Physik, Technische Universität Dortmund
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Affiliation as printed
Syracuse University
Syracuse University, Syracuse, NY, United States
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University of Glasgow
School of Physics and Astronomy, University of Glasgow, Glasgow, United Kingdom
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