Abstract
The relative production rate of B0s and B0 mesons is determined with the hadronic decays B0s→D−sπ+ and B0→D−K+. The measurement uses data corresponding to 1.0 fb−1 of pp collisions at a centre-of-mass energy of s√=7 TeV recorded in the forward region with the LHCb experiment. The ratio of production rates, fs/fd, is measured to be 0.238±0.004±0.015±0.021, where the first uncertainty is statistical, the second systematic, and the third theoretical. This is combined with a previous LHCb measurement to obtain fs/fd=0.256±0.020. The dependence of fs/fd on the transverse momentum and pseudorapidity of the B meson is determined using the decays B0s→D−sπ+ and B0→D−π+. There is evidence for a decrease with increasing transverse momentum, whereas the ratio remains constant as a function of pseudorapidity. In addition, the ratio of branching fractions of the decays B0→D−K+ and B0→D−π+ is measured to be 0.0822±0.0011(stat)±0.0025(syst).
The relative production rate of and B (0) mesons is determined with the hadronic decays and B (0) → D (−) K (+). The measurement uses data corresponding to 1.0 fb(−1) of pp collisions at a centre-of-mass energy of TeV recorded in the forward region with the LHCb experiment. The ratio of production rates, f ( )s( ) /f ( )d( ), is measured to be 0.238 ± 0.004 ± 0.015 ± 0.021, where the first uncertainty is statistical, the second systematic, and the third theoretical. This is combined with a previous LHCb measurement to obtain f ( )s( ) /f ( )d( ) = 0.256 ± 0.020. The dependence of f ( )s( ) /f ( )d( ) on the transverse momentum and pseudorapidity of the B meson is determined using the decays and B (0) → D (−)π(+). There is evidence for a decrease with increasing transverse momentum, whereas the ratio remains constant as a function of pseudorapidity. In addition, the ratio of branching fractions of the decays B (0) → D (−) K (+) and B (0) → D (−)π(+) is measured to be 0.0822 ± 0.0011 (stat) ± 0.0025 (syst).
The relative production rate of and B (0) mesons is determined with the hadronic decays and B (0) → D (−) K (+). The measurement uses data corresponding to 1.0 fb(−1) of pp collisions at a centre-of-mass energy of TeV recorded in the forward region with the LHCb experiment. The ratio of production rates, f ( )s( ) /f ( )d( ), is measured to be 0.238 ± 0.004 ± 0.015 ± 0.021, where the first uncertainty is statistical, the second systematic, and the third theoretical. This is combined with a previous LHCb measurement to obtain f ( )s( ) /f ( )d( ) = 0.256 ± 0.020. The dependence of f ( )s( ) /f ( )d( ) on the transverse momentum and pseudorapidity of the B meson is determined using the decays and B (0) → D (−)π(+). There is evidence for a decrease with increasing transverse momentum, whereas the ratio remains constant as a function of pseudorapidity. In addition, the ratio of branching fractions of the decays B (0) → D (−) K (+) and B (0) → D (−)π(+) is measured to be 0.0822 ± 0.0011 (stat) ± 0.0025 (syst).
Original language | English |
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Pages (from-to) | 001 |
Number of pages | 1 |
Journal | Journal of High Energy Physics |
Volume | 1304 |
Early online date | 22 Jan 2013 |
DOIs | |
Publication status | Published - Apr 2013 |