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  - Study of chi(b) meson production in pp collisions at root s=7 and 8 TeV and observation of the decay chi(b) (3P) -> gamma(3S)gamma
T2  - Eur. Phys. J. C
JO  - European Physical Journal C
SP  - 3092 - 13pp
VL  - 74
IS  - 10
PB  - Springer
AB  - A study of chi(b) meson production at LHCb is performed on proton-proton collision data, corresponding to 3.0 fb(-1) of integrated luminosity collected at centre-of-mass energies root s = 7 and 8 TeV. The fraction of gamma(nS) mesons originating from chi(b) decays is measured as a function of the gamma transverse momentum in the rapidity range 2.0 < y(gamma) < 4.5. The radiative transition of the chi(b) (3P) meson to gamma(3S) is observed for the first time. The chi(b)1 (3P) mass is determined to be m chi(b1) (3P) = 10 511.3 +/- 1.7 +/- 2.5MeV/c(2), where the first uncertainty is statistical and the second is systematic.
SN  - 1434-6044
UR  - http://arxiv.org/abs/1407.7734
UR  - https://doi.org/10.1140/epjc/s10052-014-3092-z
DO  - 10.1140/epjc/s10052-014-3092-z
LA  - English
N1  - WOS:000346417200001
ID  - LHCbCollaborationAaij_etal2014
ER  -