Publication
D* and D Meson Production in Muon Nucleon Interactions at 160 GeV/c
| dc.contributor.author | COMPASS collaboration (221 authors) | |
| dc.contributor.author | Bordalo, P. | |
| dc.contributor.author | Franco, C. | |
| dc.contributor.author | Nunes, A.S. | |
| dc.contributor.author | Quaresma, M. | |
| dc.contributor.author | Quintans, C. | |
| dc.contributor.author | Ramos, S. | |
| dc.contributor.author | Silva, L. | |
| dc.contributor.author | Stolarski, M. | |
| dc.date.accessioned | 2019-02-03T21:45:21Z | |
| dc.date.available | 2019-02-03T21:45:21Z | |
| dc.date.issued | 2012-12-11 | |
| dc.date.updated | 2019-02-03T21:45:21Z | |
| dc.description.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. | |
| dc.description.version | Peer Reviewed | |
| dc.identifier | Eur.Phys.J. C72 (2012) 2253; DOI 10.1140/epjc/s10052-012-2253-1 | |
| dc.identifier.uri | http://dx.doi.org/10.1140/epjc/s10052-012-2253-1 | |
| dc.identifier.uri | http://hdl.handle.net/10400.26/26321 | |
| dc.language.iso | eng | |
| dc.title | D* and D Meson Production in Muon Nucleon Interactions at 160 GeV/c | |
| dc.type | journal article | |
| dspace.entity.type | Publication | |
| rcaap.rights | openAccess | pt |
| rcaap.type | article |