The polarization of the Y(1S), Y(2S) and Y(3S) mesons, produced in pp collisions at centre-of-mass energies s=7 and 8 TeV, is measured using data samples collected by the LHCb experiment, corresponding to integrated luminosities of 1 and 2 fb−1, respectively. The measurements are performed in three polarization frames, using Y → μμ decays in the kinematic region of the transverse momentum pTΥ < 30 GeV/c and rapidity 2.2 < yY < 4.5. No large polarization is observed.

Measurement of the Y(nS) polarizations in pp collisions at √s=7 and 8 TeV / The Lhcb, C., 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., et al.. - In: JOURNAL OF HIGH ENERGY PHYSICS. - ISSN 1029-8479. - 2017:12(2017), pp. N/A-N/A. [10.1007/JHEP12(2017)110]

Measurement of the Y(nS) polarizations in pp collisions at √s=7 and 8 TeV

Bizzeti A.;
2017

Abstract

The polarization of the Y(1S), Y(2S) and Y(3S) mesons, produced in pp collisions at centre-of-mass energies s=7 and 8 TeV, is measured using data samples collected by the LHCb experiment, corresponding to integrated luminosities of 1 and 2 fb−1, respectively. The measurements are performed in three polarization frames, using Y → μμ decays in the kinematic region of the transverse momentum pTΥ < 30 GeV/c and rapidity 2.2 < yY < 4.5. No large polarization is observed.
2017
Inglese
2017
12
N/A
N/A
Hadron-Hadron scattering (experiments); Particle and resonance production; Polarization; QCD
open
info:eu-repo/semantics/article
Contributo su RIVISTA::Articolo su rivista
262
Measurement of the Y(nS) polarizations in pp collisions at √s=7 and 8 TeV / The Lhcb, C., 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., et al.. - In: JOURNAL OF HIGH ENERGY PHYSICS. - ISSN 1029-8479. - 2017:12(2017), pp. N/A-N/A. [10.1007/JHEP12(2017)110]
The Lhcb, Collaboration; Aaij, R.; Adeva, B.; Adinolfi, M.; Ajaltouni, Z.; Akar, S.; Albrecht, J.; Alessio, F.; Alexander, M.; Alfonso Albero, A.; Ali...espandi
806
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11380/1209755
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