The production of B± mesons is studied in pp collisions at centre-of-mass energies of 7 and 13 TeV, using B± → J/ψ K± decays and data samples corresponding to 1.0 fb−1 and 0.3 fb−1 , respectively. The production cross-sections summed over both charges and integrated over the transverse momentum range 0 < pT < 40 GeV/c and the rapidity range 2.0 < y < 4.5 are measured to be σ(pp → B ±X, √s = 7 TeV) = 43.0 ± 0.2 ± 2.5 ± 1.7 µb, σ(pp → B±X, √s = 13 TeV) = 86.6 ± 0.5 ± 5.4 ± 3.4 µb, where the first uncertainties are statistical, the second are systematic, and the third are due to the limited knowledge of the B± → J/ψ K± branching fraction. The ratio of the cross-section at 13 TeV to that at 7 TeV is determined to be 2.02 ± 0.02 (stat) ± 0.12 (syst). Differential cross-sections are also reported as functions of pT and y. All results are in agreement with theoretical calculations based on the state-of-art fixed next-to-leading order quantum chromodynamics.

Measurement of the B±production cross-section in pp collisions at √s=7 and 13 TeV / Aaij, R., Adeva, B., Adinolfi, M., Ajaltouni, Z., Akar, S., Albrecht, J., Alessio, F., Alexander, M., Alfonso Albero, A., Ali, S., Alkhazov, G., Alvarez Cartelle, P., Alves, A.A., Amato, S., Amerio, S., Amhis, Y., An, L., Anderlini, L., Andreassi, G., Andreotti, M., et al.. - In: JOURNAL OF HIGH ENERGY PHYSICS. - ISSN 1126-6708. - 2017:12(2017). [10.1007/JHEP12(2017)026]

Measurement of the B±production cross-section in pp collisions at √s=7 and 13 TeV

Capriotti, L.;Casse, G.;Kazeev, N.;Sarti, A.;Sciubba, A.;
2017

Abstract

The production of B± mesons is studied in pp collisions at centre-of-mass energies of 7 and 13 TeV, using B± → J/ψ K± decays and data samples corresponding to 1.0 fb−1 and 0.3 fb−1 , respectively. The production cross-sections summed over both charges and integrated over the transverse momentum range 0 < pT < 40 GeV/c and the rapidity range 2.0 < y < 4.5 are measured to be σ(pp → B ±X, √s = 7 TeV) = 43.0 ± 0.2 ± 2.5 ± 1.7 µb, σ(pp → B±X, √s = 13 TeV) = 86.6 ± 0.5 ± 5.4 ± 3.4 µb, where the first uncertainties are statistical, the second are systematic, and the third are due to the limited knowledge of the B± → J/ψ K± branching fraction. The ratio of the cross-section at 13 TeV to that at 7 TeV is determined to be 2.02 ± 0.02 (stat) ± 0.12 (syst). Differential cross-sections are also reported as functions of pT and y. All results are in agreement with theoretical calculations based on the state-of-art fixed next-to-leading order quantum chromodynamics.
2017
B physics, Hadron-Hadron scattering (experiments), Particle and resonance production
01 Pubblicazione su rivista::01a Articolo in rivista
Measurement of the B±production cross-section in pp collisions at √s=7 and 13 TeV / Aaij, R., Adeva, B., Adinolfi, M., Ajaltouni, Z., Akar, S., Albrecht, J., Alessio, F., Alexander, M., Alfonso Albero, A., Ali, S., Alkhazov, G., Alvarez Cartelle, P., Alves, A.A., Amato, S., Amerio, S., Amhis, Y., An, L., Anderlini, L., Andreassi, G., Andreotti, M., et al.. - In: JOURNAL OF HIGH ENERGY PHYSICS. - ISSN 1126-6708. - 2017:12(2017). [10.1007/JHEP12(2017)026]
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11573/1074320
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