Measurement of ψ(2 S) production cross-sections in proton-proton collisions at √s=7 and 13TeV
Aaij R., Beteta CA., Adeva B., Adinolfi M., Aidala CA., Ajaltouni Z., Akar S., Albicocco P., Albrecht J., Alessio F., Alexander M., Albero AA., Alkhazov G., Cartelle PA., Alves AA., Amato S., Amerio S., Amhis Y., An L., Anderlini L., Andreassi G., Andreotti M., Andrews JE., Archilli F., Romeu JA., Artamonov A., Artuso M., Arzymatov K., Aslanides E., Atzeni M., Audurier B., Bachmann S., Back JJ., Baker S., Balagura V., Baldini W., Baranov A., Barlow RJ., Barsuk S., Barter W., Bartolini M., Baryshnikov F., Batozskaya V., Batsukh B., Battig A., Battista V., Bay A., Beddow J., Bedeschi F., Bediaga I., Beiter A., Bel LJ., Belin S., Beliy N., Bellee V., Belloli N., Belous K., Belyaev I., Bencivenni G., Ben-Haim E., Benson S., Beranek S., Berezhnoy A., Bernet R., Berninghoff D., Bertholet E., Bertolin A., Betancourt C., Betti F., Bettler MO., Bezshyiko I., Bhasin S., Bhom J., Bieker MS., Bifani S., Billoir P., Birnkraut A., Bizzeti A., Bjørn M., Blago MP., Blake T., Blanc F., Blusk S., Bobulska D., Bocci V., Garcia OB., Boettcher T., Bondar A., Bondar N., Borghi S., Borisyak M., Borsato M., Boubdir M., Bowcock TJV., Bozzi C., Braun S., Brodski M., Brodzicka J., Gonzalo AB., Brundu D.
© 2020, CERN for the benefit of the LHCb Collaboration. The cross-sections of ψ(2 S) meson production in proton-proton collisions at s=13TeV are measured with a data sample collected by the LHCb detector corresponding to an integrated luminosity of 275pb-1. The production cross-sections for prompt ψ(2 S) mesons and those for ψ(2 S) mesons from b-hadron decays (ψ(2S)-from-b) are determined as functions of the transverse momentum, pT, and the rapidity, y, of the ψ(2 S) meson in the kinematic range 2<pT<20GeV/c and 2.0 < y< 4.5. The production cross-sections integrated over this kinematic region are σ(promptψ(2S),13TeV)=1.430±0.005(stat)±0.099(syst)μb,σ(ψ(2S)-from-b,13TeV)=0.426±0.002(stat)±0.030(syst)μb.A new measurement of ψ(2 S) production cross-sections in pp collisions at s=7TeV is also performed using data collected in 2011, corresponding to an integrated luminosity of 614pb-1. The integrated production cross-sections in the kinematic range 3.5<pT<14GeV/c and 2.0 < y< 4.5 are σ(promptψ(2S),7TeV)=0.471±0.001(stat)±0.025(syst)μb,σ(ψ(2S)-from-b,7TeV)=0.126±0.001(stat)±0.008(syst)μb.All results show reasonable agreement with theoretical calculations.