Measurement of the b- Quark Production Cross Section in 7 and 13 TeV pp Collisions
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 +/- mu b 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.
| Title: | Measurement of the b- Quark Production Cross Section in 7 and 13 TeV pp Collisions |
| Authors: | Aaij, R. Adeva, B. Adinolfi, M. |
| Keywords: | ROOT-S=7 TEV;DECAYS;RATIO;LHC;QCD |
| Issue Date: | 2017 |
| Publisher: | AMER PHYSICAL SOC, ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA |
| Citation: | ISIKNOWLEDGE |
| Abstract: | 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 +/- mu b 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. |
| Description: | TNS07072 ; PHYSICAL REVIEW LETTERS Volume: 118 Issue: 5 Article Number: 052002 Published: FEB 3 2017 |
| URI: | http://repository.vnu.edu.vn/handle/VNU_123/29748 |
| ISSN: | 0031-9007 1079-7114 |
| Appears in Collections: | Bài báo của ĐHQGHN trong Web of Science |
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