Measurements are presented of electroweak boson production using data from pp collisions at a centre-of-mass energy of √=8 TeV. The analysis is based on an integrated luminosity of 2.0 fb−1 recorded with the LHCb detector. The bosons are identified in the W → μν and Z → μ + μ − decay channels. The cross-sections are measured for muons in the pseudorapidity range 2.0 < η < 4.5, with transverse momenta p T > 20 GeV/c and, in the case of the Z boson, a dimuon mass within 60<+−<120 GeV/c 2. The results are +→+=1093.6±2.1±7.2±10.9±12.7pb,−→−⎯⎯⎯=818.4±1.9±5.0±7.0±9.5pb,→+−=95.0±0.3±0.7±1.1±1.1pb, where the first uncertainties are statistical, the second are systematic, the third are due to the knowledge of the LHC beam energy and the fourth are due to the luminosity determination. The evolution of the W and Z boson cross-sections with centre-of-mass energy is studied using previously reported measurements with 1.0 fb−1 of data at 7 TeV. Differential distributions are also presented. Results are in good agreement with theoretical predictions at next-to-next-to-leading order in perturbative quantum chromodynamics.

Measurement of forward W and Z boson production in pp collisions at (Formula Presented.) TeV / The LHCb, C., Aaij, R., Abellán Beteta, C., Adeva, B., Adinolfi, M., Affolder, A., Ajaltouni, Z., Akar, S., Albrecht, J., Alessio, F., Alexander, M., Ali, S., Alkhazov, G., Alvarez Cartelle, P., Alves, A.A., Amato, S., Amerio, S., Amhis, Y., An, L., Anderlini, L., et al.. - In: JOURNAL OF HIGH ENERGY PHYSICS. - ISSN 1126-6708. - 2016:1(2016), pp. 1-45. [10.1007/JHEP01(2016)155]

Measurement of forward W and Z boson production in pp collisions at (Formula Presented.) TeV

Capriotti, L.;Casse, G.;Sarti, A.;Sciubba, A.;
2016

Abstract

Measurements are presented of electroweak boson production using data from pp collisions at a centre-of-mass energy of √=8 TeV. The analysis is based on an integrated luminosity of 2.0 fb−1 recorded with the LHCb detector. The bosons are identified in the W → μν and Z → μ + μ − decay channels. The cross-sections are measured for muons in the pseudorapidity range 2.0 < η < 4.5, with transverse momenta p T > 20 GeV/c and, in the case of the Z boson, a dimuon mass within 60<+−<120 GeV/c 2. The results are +→+=1093.6±2.1±7.2±10.9±12.7pb,−→−⎯⎯⎯=818.4±1.9±5.0±7.0±9.5pb,→+−=95.0±0.3±0.7±1.1±1.1pb, where the first uncertainties are statistical, the second are systematic, the third are due to the knowledge of the LHC beam energy and the fourth are due to the luminosity determination. The evolution of the W and Z boson cross-sections with centre-of-mass energy is studied using previously reported measurements with 1.0 fb−1 of data at 7 TeV. Differential distributions are also presented. Results are in good agreement with theoretical predictions at next-to-next-to-leading order in perturbative quantum chromodynamics.
2016
Electroweak interaction, Hadron-Hadron scattering, Forward physics
01 Pubblicazione su rivista::01a Articolo in rivista
Measurement of forward W and Z boson production in pp collisions at (Formula Presented.) TeV / The LHCb, C., Aaij, R., Abellán Beteta, C., Adeva, B., Adinolfi, M., Affolder, A., Ajaltouni, Z., Akar, S., Albrecht, J., Alessio, F., Alexander, M., Ali, S., Alkhazov, G., Alvarez Cartelle, P., Alves, A.A., Amato, S., Amerio, S., Amhis, Y., An, L., Anderlini, L., et al.. - In: JOURNAL OF HIGH ENERGY PHYSICS. - ISSN 1126-6708. - 2016:1(2016), pp. 1-45. [10.1007/JHEP01(2016)155]
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11573/1074210
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