Measurement of the forward Z boson production cross-section in pp collisions at √s = 7TeV

The Lhcb Collaboration

Research output: Contribution to journalArticle

34 Citations (Scopus)

Abstract

A measurement of the production cross-section for Z bosons that decay to muons is presented. The data were recorded by the LHCb detector during pp collisions at a centre-of-mass energy of 7 TeV, and correspond to an integrated luminosity of 1.0 fb−1. The cross-section is measured for muons in the pseudorapidity range 2.0 <η <4.5 with transverse momenta pT> 20 GeV/c. The dimuon mass is restricted to 60 <Mμ+μ− <120 GeV/c2. The measured cross-section is (Formula presented.) where the uncertainties are due to the sample size, systematic effects, the beam energy and the luminosity. This result is in good agreement with theoretical predictions at next-to-next-to-leading order in perturbative quantum chromodynamics. The cross-section is also measured differentially as a function of kinematic variables of the Z boson. Ratios of the production cross-sections of electroweak bosons are presented using updated LHCb measurements of W boson production. A precise test of the Standard Model is provided by the measurement of the ratio (Formula presented.) where the uncertainty due to luminosity cancels.

Original languageEnglish (US)
Article number39
JournalJournal of High Energy Physics
Volume2015
Issue number8
DOIs
StatePublished - Aug 17 2015

Fingerprint

bosons
collisions
cross sections
luminosity
muons
center of mass
kinematics
quantum chromodynamics
energy
detectors
decay
predictions

Keywords

  • Electroweak interaction
  • Forward physics
  • Hadron-Hadron Scattering
  • proton-proton scattering
  • QCD

ASJC Scopus subject areas

  • Nuclear and High Energy Physics

Cite this

Measurement of the forward Z boson production cross-section in pp collisions at √s = 7TeV. / The Lhcb Collaboration.

In: Journal of High Energy Physics, Vol. 2015, No. 8, 39, 17.08.2015.

Research output: Contribution to journalArticle

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abstract = "A measurement of the production cross-section for Z bosons that decay to muons is presented. The data were recorded by the LHCb detector during pp collisions at a centre-of-mass energy of 7 TeV, and correspond to an integrated luminosity of 1.0 fb−1. The cross-section is measured for muons in the pseudorapidity range 2.0 <η <4.5 with transverse momenta pT> 20 GeV/c. The dimuon mass is restricted to 60 <Mμ+μ− <120 GeV/c2. The measured cross-section is (Formula presented.) where the uncertainties are due to the sample size, systematic effects, the beam energy and the luminosity. This result is in good agreement with theoretical predictions at next-to-next-to-leading order in perturbative quantum chromodynamics. The cross-section is also measured differentially as a function of kinematic variables of the Z boson. Ratios of the production cross-sections of electroweak bosons are presented using updated LHCb measurements of W boson production. A precise test of the Standard Model is provided by the measurement of the ratio (Formula presented.) where the uncertainty due to luminosity cancels.",
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author = "{The Lhcb Collaboration} and R. Aaij and B. Adeva and M. Adinolfi and A. Affolder and Z. Ajaltouni and S. Akar and J. Albrecht and F. Alessio and M. Alexander and S. Ali and G. Alkhazov and {Alvarez Cartelle}, P. and Alves, {A. A.} and S. Amato and S. Amerio and Y. Amhis and L. An and L. Anderlini and J. Anderson and M. Andreotti and Andrews, {J. E.} and Appleby, {R. B.} and {Aquines Gutierrez}, O. and F. Archilli and P. d’Argent and A. Artamonov and M. Artuso and Marina Artuso and G. Auriemma and M. Baalouch and S. Bachmann and Back, {J. J.} and A. Badalov and C. Baesso and W. Baldini and Barlow, {R. J.} and C. Barschel and S. Barsuk and W. Barter and V. Batozskaya and V. Battista and A. Bay and L. Beaucourt and J. Beddow and F. Bedeschi and I. Bediaga and Bel, {L. J.} and Blusk, {Steven Roy} and Tomasz Skwarnicki and Sheldon Stone",
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AU - Back, J. J.

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