TY  - JOUR
AU  - LHCb Collaboration (Aaij, R. et al
AU  - Martinez-Vidal, F.
AU  - Oyanguren, A.
AU  - Ruiz Valls, P.
AU  - Sanchez Mayordomo, C.
PY  - 2014
DA  - 2014//
TI  - Measurement of the chi(b) (3 P) mass and of the relative rate of chi(b1) (1 P) and chi(b2) (1 P) production
T2  - J. High Energy Phys.
JO  - Journal of High Energy Physics
SP  - 088
EP  - 22pp
VL  - 10
IS  - 10
PB  - Springer
KW  - Quarkonium
KW  - Hadron-Hadron Scattering
KW  - Flavor physics
AB  - The production of chi(b) mesons in proton-proton collisions is studied using a data sample collected by the LHCb detector, at centre-of-mass energies of root s = 7 and 8 TeV and corresponding to an integrated luminosity of 3.0 fb(-1). The chi(b) mesons are identified through their decays to Upsilon(1 S)gamma and Upsilon(2 S)gamma using photons that converted to e(+)e (-) pairs in the detector. The relative prompt production rate of chi(b1)(1 P) and chi(b2)(1 P) mesons is measured as a function of the Upsilon(1 S) transverse momentum in the chi(b) rapidity range 2.0 < y < 4.5. A precise measurement of the chi(b) (3 P) mass is also performed. Assuming a mass splitting between the chi(b1)(3 P) and the chi(b2)(3 P) states of 10.5 MeV/c(2), the measured mass of the chi(b1)(3 P) meson is m (chi(b1)(3 P)) = 10515.7(-3.9)(+2.2)(stat)(-2.1)(+1.5)(syst) MeV/c(2).
SN  - 1029-8479
UR  - http://arxiv.org/abs/arXiv:1409.1408
UR  - https://doi.org/10.1007/JHEP10(2014)088
DO  - 10.1007/JHEP10(2014)088
LA  - English
N1  - WOS:000343976700003
ID  - LHCbCollaborationAaij_etal2014
ER  -