Measurement of the forward W boson cross-section in pp collisions at root s = 7 TeV

LHCb Collaboration; R. Aaij; B. Adeva; M. Adinolfi; A. Affolder; Z. Ajaltouni; S. Akar; J. Albrecht; F. Alessio; M. Alexander; S. Ali; G. Alkhazov; P. Alvarez Cartelle; A. A. Alves; S. Amato; S. Amerio; Y. Amhis; L. An; L. Anderlini; J. Anderson; R. Andreassen; M. Andreotti; J. E. Andrews; R. B. Appleby; O. Aquines Gutierrez; F. Archilli; A. Artamonov; M. Artuso; E. Aslanides; G. Auriemma; M. Baalouch; S. Bachmann; J. J. Back; A. Badalov; W. Baldini; R. J. Barlow; C. Barschel; S. Barsuk; W. Barter; V. Batozskaya; V. Battista; A. Bay; Laurence Carson; P. E. L. Clarke; G. A. Cowan; Daniel Craik; S. Eisenhardt; Silvia Gambetta; F. Muheim; M. Needham; S. Playfer

doi:10.1007/JHEP12(2014)079

Measurement of the forward W boson cross-section in pp collisions at root s = 7 TeV

LHCb Collaboration, R. Aaij^*, B. Adeva, M. Adinolfi, A. Affolder, Z. Ajaltouni, S. Akar, J. Albrecht, F. Alessio, M. Alexander, S. Ali, G. Alkhazov, P. Alvarez Cartelle, A. A. Alves, S. Amato, S. Amerio, Y. Amhis, L. An, L. Anderlini, J. AndersonR. Andreassen, M. Andreotti, J. E. Andrews, R. B. Appleby, O. Aquines Gutierrez, F. Archilli, A. Artamonov, M. Artuso, E. Aslanides, G. Auriemma, M. Baalouch, S. Bachmann, J. J. Back, A. Badalov, W. Baldini, R. J. Barlow, C. Barschel, S. Barsuk, W. Barter, V. Batozskaya, V. Battista, A. Bay, Laurence Carson, P. E. L. Clarke, G. A. Cowan, Daniel Craik, S. Eisenhardt, Silvia Gambetta, F. Muheim, M. Needham, S. Playfer

^*Corresponding author for this work

School of Physics and Astronomy

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

Abstract

A measurement of the inclusive W -> mu nu production cross-section using data from pp collisions at a centre-of-mass energy of root s=7 TeV is presented. The analysis is based on an integrated luminosity of about 1.0 fb(-1) recorded with the LHCb detector. Results are reported for muons with a transverse momentum greater than 20 GeV/c and pseudorapidity between 2.0 and 4.5. The W+ and W- production cross-sections are measured to be

sigma(W+->mu+nu)=861.0 +/- 2.0 +/- 11.2 +/- 14.7pb,

sigma(W-->mu-(nu)over bar)=675.8 +/- 1.9 +/- 8.8 +/- 11.6pb,

where the first uncertainty is statistical, the second is systematic and the third is due to the luminosity determination. Cross-section ratios and differential distributions as functions of the muon pseudorapidity are also presented. The ratio of W+ to W- cross-sections in the same fiducial kinematic region is determined to be

sigma(W+->mu+nu)/sigma(W-->mu-(nu)over bar) = 1.274 +/- 0.005 +/- 0.009,

where the uncertainties are statistical and systematic, respectively. Results are in good agreement with theoretical predictions at next-to-next-to-leading order in perturbative quantum chromodynamics.

Original language	English
Article number	079
Pages (from-to)	079
Number of pages	25
Journal	Journal of High Energy Physics
Volume	1412
Issue number	12
DOIs	https://doi.org/10.1007/JHEP12(2014)079
Publication status	Published - 10 Dec 2014

Keywords / Materials (for Non-textual outputs)

Hadron-Hadron Scattering
QCD
Forward physics
YAN K-FACTOR
PARTON DISTRIBUTIONS
MONTE-CARLO
DECAY
ORDER
LHC

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LHCb Collaboration, Aaij, R., Adeva, B., Adinolfi, M., Affolder, A., Ajaltouni, Z., Akar, S., Albrecht, J., Alessio, F., Alexander, M., Ali, S., Alkhazov, G., Cartelle, P. A., Alves, A. A., Amato, S., Amerio, S., Amhis, Y., An, L., Anderlini, L., ... Playfer, S. (2014). Measurement of the forward W boson cross-section in pp collisions at root s = 7 TeV. Journal of High Energy Physics, 1412(12), 079. Article 079. https://doi.org/10.1007/JHEP12(2014)079

@article{b0d37b6d54a5445b9906e83f029391a8,

title = "Measurement of the forward W boson cross-section in pp collisions at root s = 7 TeV",

abstract = "A measurement of the inclusive W -> mu nu production cross-section using data from pp collisions at a centre-of-mass energy of root s=7 TeV is presented. The analysis is based on an integrated luminosity of about 1.0 fb(-1) recorded with the LHCb detector. Results are reported for muons with a transverse momentum greater than 20 GeV/c and pseudorapidity between 2.0 and 4.5. The W+ and W- production cross-sections are measured to besigma(W+->mu+nu)=861.0 +/- 2.0 +/- 11.2 +/- 14.7pb,sigma(W-->mu-(nu)over bar)=675.8 +/- 1.9 +/- 8.8 +/- 11.6pb,where the first uncertainty is statistical, the second is systematic and the third is due to the luminosity determination. Cross-section ratios and differential distributions as functions of the muon pseudorapidity are also presented. The ratio of W+ to W- cross-sections in the same fiducial kinematic region is determined to besigma(W+->mu+nu)/sigma(W-->mu-(nu)over bar) = 1.274 +/- 0.005 +/- 0.009,where the uncertainties are statistical and systematic, respectively. Results are in good agreement with theoretical predictions at next-to-next-to-leading order in perturbative quantum chromodynamics.",

keywords = "Hadron-Hadron Scattering, QCD, Forward physics, YAN K-FACTOR, PARTON DISTRIBUTIONS, MONTE-CARLO, DECAY, ORDER, LHC",

author = "{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 Cartelle, {P. Alvarez} and Alves, {A. A.} and S. Amato and S. Amerio and Y. Amhis and L. An and L. Anderlini and J. Anderson and R. Andreassen and M. Andreotti and Andrews, {J. E.} and Appleby, {R. B.} and Gutierrez, {O. Aquines} and F. Archilli and A. Artamonov and M. Artuso and E. Aslanides and G. Auriemma and M. Baalouch and S. Bachmann and Back, {J. J.} and A. Badalov 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 Laurence Carson and Clarke, {P. E. L.} and Cowan, {G. A.} and Daniel Craik and S. Eisenhardt and Silvia Gambetta and F. Muheim and M. Needham and S. Playfer",

year = "2014",

month = dec,

day = "10",

doi = "10.1007/JHEP12(2014)079",

language = "English",

volume = "1412",

pages = "079",

journal = "Journal of High Energy Physics",

issn = "1029-8479",

publisher = "Springer",

number = "12",

}

LHCb Collaboration, Aaij, R, Adeva, B, Adinolfi, M, Affolder, A, Ajaltouni, Z, Akar, S, Albrecht, J, Alessio, F, Alexander, M, Ali, S, Alkhazov, G, Cartelle, PA, Alves, AA, Amato, S, Amerio, S, Amhis, Y, An, L, Anderlini, L, Anderson, J, Andreassen, R, Andreotti, M, Andrews, JE, Appleby, RB, Gutierrez, OA, Archilli, F, Artamonov, A, Artuso, M, Aslanides, E, Auriemma, G, Baalouch, M, Bachmann, S, Back, JJ, Badalov, A, Baldini, W, Barlow, RJ, Barschel, C, Barsuk, S, Barter, W, Batozskaya, V, Battista, V, Bay, A, Carson, L, Clarke, PEL, Cowan, GA, Craik, D, Eisenhardt, S , Gambetta, S , Muheim, F , Needham, M & Playfer, S 2014, 'Measurement of the forward W boson cross-section in pp collisions at root s = 7 TeV', Journal of High Energy Physics, vol. 1412, no. 12, 079, pp. 079. https://doi.org/10.1007/JHEP12(2014)079

TY - JOUR

T1 - Measurement of the forward W boson cross-section in pp collisions at root s = 7 TeV

AU - LHCb Collaboration

AU - Aaij, R.

AU - Adeva, B.

AU - Adinolfi, M.

AU - Affolder, A.

AU - Ajaltouni, Z.

AU - Akar, S.

AU - Albrecht, J.

AU - Alessio, F.

AU - Alexander, M.

AU - Ali, S.

AU - Alkhazov, G.

AU - Cartelle, P. Alvarez

AU - Alves, A. A.

AU - Amato, S.

AU - Amerio, S.

AU - Amhis, Y.

AU - An, L.

AU - Anderlini, L.

AU - Anderson, J.

AU - Andreassen, R.

AU - Andreotti, M.

AU - Andrews, J. E.

AU - Appleby, R. B.

AU - Gutierrez, O. Aquines

AU - Archilli, F.

AU - Artamonov, A.

AU - Artuso, M.

AU - Aslanides, E.

AU - Auriemma, G.

AU - Baalouch, M.

AU - Bachmann, S.

AU - Back, J. J.

AU - Badalov, A.

AU - Baldini, W.

AU - Barlow, R. J.

AU - Barschel, C.

AU - Barsuk, S.

AU - Barter, W.

AU - Batozskaya, V.

AU - Battista, V.

AU - Bay, A.

AU - Carson, Laurence

AU - Clarke, P. E. L.

AU - Cowan, G. A.

AU - Craik, Daniel

AU - Eisenhardt, S.

AU - Gambetta, Silvia

AU - Muheim, F.

AU - Needham, M.

AU - Playfer, S.

PY - 2014/12/10

Y1 - 2014/12/10

N2 - A measurement of the inclusive W -> mu nu production cross-section using data from pp collisions at a centre-of-mass energy of root s=7 TeV is presented. The analysis is based on an integrated luminosity of about 1.0 fb(-1) recorded with the LHCb detector. Results are reported for muons with a transverse momentum greater than 20 GeV/c and pseudorapidity between 2.0 and 4.5. The W+ and W- production cross-sections are measured to besigma(W+->mu+nu)=861.0 +/- 2.0 +/- 11.2 +/- 14.7pb,sigma(W-->mu-(nu)over bar)=675.8 +/- 1.9 +/- 8.8 +/- 11.6pb,where the first uncertainty is statistical, the second is systematic and the third is due to the luminosity determination. Cross-section ratios and differential distributions as functions of the muon pseudorapidity are also presented. The ratio of W+ to W- cross-sections in the same fiducial kinematic region is determined to besigma(W+->mu+nu)/sigma(W-->mu-(nu)over bar) = 1.274 +/- 0.005 +/- 0.009,where the uncertainties are statistical and systematic, respectively. Results are in good agreement with theoretical predictions at next-to-next-to-leading order in perturbative quantum chromodynamics.

AB - A measurement of the inclusive W -> mu nu production cross-section using data from pp collisions at a centre-of-mass energy of root s=7 TeV is presented. The analysis is based on an integrated luminosity of about 1.0 fb(-1) recorded with the LHCb detector. Results are reported for muons with a transverse momentum greater than 20 GeV/c and pseudorapidity between 2.0 and 4.5. The W+ and W- production cross-sections are measured to besigma(W+->mu+nu)=861.0 +/- 2.0 +/- 11.2 +/- 14.7pb,sigma(W-->mu-(nu)over bar)=675.8 +/- 1.9 +/- 8.8 +/- 11.6pb,where the first uncertainty is statistical, the second is systematic and the third is due to the luminosity determination. Cross-section ratios and differential distributions as functions of the muon pseudorapidity are also presented. The ratio of W+ to W- cross-sections in the same fiducial kinematic region is determined to besigma(W+->mu+nu)/sigma(W-->mu-(nu)over bar) = 1.274 +/- 0.005 +/- 0.009,where the uncertainties are statistical and systematic, respectively. Results are in good agreement with theoretical predictions at next-to-next-to-leading order in perturbative quantum chromodynamics.

KW - Hadron-Hadron Scattering

KW - QCD

KW - Forward physics

KW - YAN K-FACTOR

KW - PARTON DISTRIBUTIONS

KW - MONTE-CARLO

KW - DECAY

KW - ORDER

KW - LHC

U2 - 10.1007/JHEP12(2014)079

DO - 10.1007/JHEP12(2014)079

M3 - Article

SN - 1029-8479

VL - 1412

SP - 079

JO - Journal of High Energy Physics

JF - Journal of High Energy Physics

IS - 12

M1 - 079

ER -

Measurement of the forward W boson cross-section in pp collisions at root s = 7 TeV

Abstract

Keywords / Materials (for Non-textual outputs)

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Cite this