TY  - JOUR
AU  - LHCb Collaboration (Aaij, R. et al
AU  - Garcia Martin, L. M.
AU  - Martinez-Vidal, F.
AU  - Oyanguren, A.
AU  - Remon Alepuz, C.
AU  - Ruiz Valls, P.
AU  - Sanchez Mayordomo, C.
PY  - 2017
DA  - 2017//
TI  - Measurement of the b- Quark Production Cross Section in 7 and 13 TeV pp Collisions
T2  - Phys. Rev. Lett.
JO  - Physical Review Letters
SP  - 052002
EP  - 11pp
VL  - 118
IS  - 5
PB  - Amer Physical Soc
AB  - Measurements of the cross section for producing b quarks in the reaction pp -> b (b) over barX are reported in 7 and 13 TeV collisions at the LHC as a function of the pseudorapidity. in the range 2 < eta < 5 covered by the acceptance of the LHCb experiment. The measurements are done using semileptonic decays of b-flavored hadrons decaying into a ground-state charmed hadron in association with a muon. The cross sections in the covered. range are 72.0 +/- 0.3 +/- 6.8 and 154.3 +/- 1.5 +/- 14.3 +/- μb for 7 and 13 TeV. The ratio is 2.14 +/- 0.02 +/- 0.13, where the quoted uncertainties are statistical and systematic, respectively. The agreement with theoretical expectation is good at 7 TeV, but differs somewhat at 13 TeV. The measured ratio of cross sections is larger at lower eta than the model prediction.
SN  - 0031-9007
UR  - http://arxiv.org/abs/1612.05140
UR  - https://doi.org/10.1103/PhysRevLett.118.052002
DO  - 10.1103/PhysRevLett.118.052002
LA  - English
N1  - WOS:000396415600003
ID  - LHCbCollaborationAaij_etal2017
ER  -