D* and D Meson Production in Muon Nucleon Interactions at 160 GeV/c
Abstract
The production of D* and D mesons in inelastic scattering of 160 GeV/c muons off a ^6LiD target has been investigated with the COMPASS spectrometer at CERN for 0.003 (GeV/c)^2 < Q^2 < 10 (GeV/c)^2 and 3x10^-5< x_Bj < 0.1. The study is based on 8100 events where a D^0 or anti D^0 is detected subsequently to a D*+ or D*- decay, and on 34000 events, where only a D^0 or anti D^0 is detected. Kinematic distributions of D*, D and K*_2 are given as a function of their energy E, transverse momentum p_T, energy fraction z, and of the virtual photon variables nu, Q^2 and x_Bj. Semi-inclusive differential D* production cross-sections are compared with theoretical predictions for D* production via photon-gluon fusion into open charm. The total observed production cross-section for D*+/- mesons with laboratory energies between 22 and 86 GeV is 1.9 nb. Significant cross-section asymmetries are observed between D*+ and D*- production for nu<40 GeV and z>0.6.
Keywords
Cite
@article{arxiv.1211.1575,
title = {D* and D Meson Production in Muon Nucleon Interactions at 160 GeV/c},
author = {C. Adolph and M. G. Alekseev and V. Yu. Alexakhin and Yu. Alexandrov and G. D. Alexeev and A. Amoroso and A. A. Antonov and A. Austregesilo and B. Badelek and F. Balestra and J. Barth and G. Baum and Y. Bedfer and A. Berlin and J. Bernhard and R. Bertini and M. Bettinelli and K. Bicker and J. Bieling and R. Birsa and J. Bisplinghoff and P. Bordalo and F. Bradamante and C. Braun and A. Bravar and A. Bressan and M. Buechele and E. Burtin and L. Capozza and M. Chiosso and S. U. Chung and A. Cicuttin and M. L. Crespo and S. Dalla Torre and S. Das and S. S. Dasgupta and S. Dasgupta and O. Yu. Denisov and L. Dhara and S. V. Donskov and N. Doshita and V. Duic and W. Duennweber and M. Dziewiecki and A. Efremov and C. Elia and P. D. Eversheim and W. Eyrich and M. Faessler and A. Ferrero and A. Filin and M. Finger and M. Finger and H. Fischer and C. Franco and N. du Fresne von Hohenesche and J. M. Friedrich and V. Frolov and R. Garfagnini and F. Gautheron and O. P. Gavrichtchouk and S. Gerassimov and R. Geyer and M. Giorgi and I. Gnesi and B. Gobbo and S. Goertz and S. Grabmueller and A. Grasso and B. Grube and R. Gushterski and A. Guskov and T. Guthoerl and F. Haas and D. von Harrach and F. H. Heinsius and F. Herrmann and C. Hess and F. Hinterberger and N. Horikawa and Ch. Hoeppner and N. d'Hose and S. Huber and S. Ishimoto and O. Ivanov and Yu. Ivanshin and T. Iwata and R. Jahn and V. Jary and P. Jasinski and R. Joosten and E. Kabuss and D. Kang and B. Ketzer and G. V. Khaustov and Yu. A. Khokhlov and Yu. Kisselev and F. Klein and K. Klimaszewski and S. Koblitz and J. H. Koivuniemi and V. N. Kolosov and K. Kondo and K. Koenigsmann and I. Konorov and V. F. Konstantinov and A. Korzenev and A. M. Kotzinian and O. Kouznetsov and M. Kraemer and Z. V. Kroumchtein and F. Kunne and K. Kurek and L. Lauser and A. A. Lednev and A. Lehmann and S. Levorato and J. Lichtenstadt and T. Liska and A. Maggiora and A. Magnon and N. Makke and G. K. Mallot and A. Mann and C. Marchand and A. Martin and J. Marzec and T. Matsuda and G. Meshcheryakov and W. Meyer and T. Michigami and Yu. V. Mikhailov and A. Morreale and A. Mutter and A. Nagaytsev and T. Nagel and F. Nerling and S. Neubert and D. Neyret and V. I. Nikolaenko and W. -D. Nowak and A. S. Nunes and A. G. Olshevsky and M. Ostrick and A. Padee and R. Panknin and D. Panzieri and B. Parsamyan and S. Paul and E. Perevalova and G. Pesaro and D. V. Peshekhonov and G. Piragino and S. Platchkov and J. Pochodzalla and J. Polak and V. A. Polyakov and J. Pretz and M. Quaresma and C. Quintans and J. -F. Rajotte and S. Ramos and V. Rapatsky and G. Reicherz and E. Rocco and E. Rondio and N. S. Rossiyskaya and D. I. Ryabchikov and V. D. Samoylenko and A. Sandacz and M. G. Sapozhnikov and S. Sarkar and I. A. Savin and G. Sbrizzai and P. Schiavon and C. Schill and T. Schlueter and A. Schmidt and K. Schmidt and L. Schmitt and H. Schmieden and K. Schoenning and S. Schopferer and M. Schott and O. Yu. Shevchenko and L. Silva and L. Sinha and A. N. Sissakian and M. Slunecka and G. I. Smirnov and S. Sosio and F. Sozzi and A. Srnka and L. Steiger and M. Stolarski and M. Sulc and R. Sulej and H. Suzuki and P. Sznajder and S. Takekawa and J. Ter Wolbeek and S. Tessaro and F. Tessarotto and L. G. Tkatchev and S. Uhl and I. Uman and M. Vandenbroucke and M. Virius and N. V. Vlassov and L. Wang and T. Weisrock and M. Wilfert and R. Windmolders and W. Wislicki and H. Wollny and K. Zaremba and M. Zavertyaev and E. Zemlyanichkina and M. Ziembicki and N. Zhuravlev and A. Zvyagin},
journal= {arXiv preprint arXiv:1211.1575},
year = {2015}
}
Comments
22 pages, 12 figures and 2 tables