@article{15cea3c288294c5dba1f0aaeaaeaa47d,

title = "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",

abstract = "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 bem chi(b1) (3P) = 10 511.3 +/- 1.7 +/- 2.5MeV/c(2),where the first uncertainty is statistical and the second is systematic.",

keywords = "UPSILON PRODUCTION, PROMPT CHI(C), J-PSI, B-S(0), RATIO, B-0",

author = "R. Aaij and B. Adeva and M. Adinolfi and A. Affolder and Z. Ajaltouni and S. Akar and J. Albrecht and F. Alessio and M. Alexander and S. Ali and G. Alkhazov and P.A. Cartelle and A.A. Alves and S. Amato and S. Amerio and Y. Amhis and L. An and L. Anderlini and J. Anderson and R. Andreassen and M. Andreotti and J.E. Andrews and R.B. Appleby and O.A. Gutierrez and F. Archilli and A. Artamonov and M. Artuso and E. Aslanides and G. Auriemma and M. Baalouch and S. Bachmann and J.J. Back and A. Badalov and W. Baldini and R.J. Barlow and C. Barschel and S. Barsuk and W. Barter and V. Batozskaya and V. Battista and A. Bay and L. Beaucourt and J. Beddow and F. Bedeschi and I. Bediaga and S. Belogurov and K. Belous and I. Belyaev and E. Ben-Haim and {van den Brand}, J. and {LHCb collaboration}",

year = "2014",

month = oct,

day = "8",

doi = "10.1140/epjc/s10052-014-3092-z",

language = "English",

volume = "74",

journal = "European Physical Journal C",

issn = "1434-6044",

publisher = "Springer Verlag",

number = "10",

}