@article{39085054449c4e4ebf04544868ea37f6,

title = "Measurement of the fraction of Gamma(1S) originating from chi(b)(1P) decays in pp collisions at root s=7 TeV",

abstract = "The production of chi(b)(1P) mesons in pp collisions at a centre-of-mass energy of 7 TeV is studied using 32 pb(-1) of data collected with the LHCb detector. The chi(b)(1P) mesons are reconstructed in the decay mode chi(b)(1P) -> Gamma(1S)gamma -> mu(+)mu(-)gamma. The fraction of Gamma(1S) originating from chi(b)(1P) decays in the Gamma(1S) transverse momentum range 6 < p(T)(Gamma(1S)) < 15GeV/c and rapidity range 2.0 < y(Gamma(1S)) < 4.5 is measured to be (20.7 +/- 5.7 +/- 2.1(-5.4)(+2.7))%, where the first uncertainty is statistical, the second is systematic and the last gives the range of the result due to the unknown Gamma(1S) and chi(b)(1P) polarizations.",

keywords = "Hadron-Hadron Scattering, P(P)OVER-BAR COLLISIONS, MESONS",

author = "R. Aaij and C.A. Beteta and A. Adametz and B. Adeva and M. Adinolfi and C. Adrover and A. Affolder and Z. Ajaltouni 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 Y. Amhis and J. Anderson and R.B. Appleby and O.A. Gutierrez and F. Archilli and A. Artamonov and M. Artuso and E. Aslanides and G. Auriemma and S. Bachmann and J.J. Back and V. Balagura and W. Baldini and R.J. Barlow and C. Barschel and S. Barsuk and W. Barter and A. Bates and C. Bauer and T. Bauer and A. Bay and J. Beddow and I. Bediaga and S. Belogurov and K. Belous and I. Belyaev and E. Ben-Haim and M. Benayoun and G. Bencivenni and S. Benson and J. Benton and R. Bernet and M.O. Bettler and {Van den Brand}, J. and {LHCb collaboration}",

year = "2012",

month = nov,

day = "1",

doi = "10.1007/JHEP11(2012)031",

language = "English",

journal = "Journal of High Energy Physics",

issn = "1029-8479",

publisher = "Springer Verlag",

number = "11",

}