Measurement of the ratio of the production cross sections times branching fractions of b-c(+/-) -> j/psi pi(+/-) and b-+/- -> j/psi k-+/- and b(b-c(+/-) -> j/psi pi(+/-)pi(+/-)pi(-/+))/b(b-c(+/-) -> j/psi pi(+/-)) in pp collisions at root s=7 tev
文献类型：期刊论文
| 作者 | Khachatryan, V.1; Sirunyan, A. M.1; Tumasyan, A.1; Adam, W.2; Bergauer, T.2; Dragicevic, M.2; Eroe, J.2; Fabjan, C.2,189; Friedl, M.2; Fruehwirth, R.2,189 |
| 刊名 | Journal of high energy physics
 |
| 出版日期 | 2015-01-13 |
| 期号 | 1页码:30 |
| ISSN号 | 1029-8479 |
| 关键词 | Hadron-hadron scattering Branching fraction B physics |
| DOI | 10.1007/jhep01(2015)063 |
| 通讯作者 | Khachatryan, v.() |
| 英文摘要 | The ratio of the production cross sections times branching fractions (sigma(b-c(+/-))b(b-c(+/-) -> j/psi pi(+/-)))/(sigma(b-+/-)b(b-+/- -> j/psi k-+/-)) is studied in proton-proton collisions at a center-of-mass energy of 7tev with the cms detector at the lhc. the kinematic region investigated requires b-c(+/-) and b-+/- mesons with transverse momentum p(t) > 15 gev and rapidity vertical bar y vertical bar < 1.6. the data sample corresponds to an integrated luminosity of 5.1 fb(-1). the ratio is determined to be [0.48 +/- 0.05 (stat) +/- 0.03 (syst) +/- 0.05 (tau(bc))]%. the b-c(+/-) -> j/psi pi(+/-)pi(+/-)pi(-/+) decay is also observed in the same data sample. using a model-independent method developed to measure the efficiency given the presence of resonant behaviour in the three-pion system, the ratio of the branching fractions b-c(+/-) -> j/psi pi(+/-)pi(+/-)pi(-/+)/b(b-c(+/-) -> j/psi pi(+/-)) is measured to be 2.55 +/- 0.80 (stat) +/- 0.33 (syst)(-0.01)(+0.04) (tau(bc)), consistent with the previous lhcb result. |
| 收录类别 | SCI |
| WOS关键词 | C MESON ; SIMULATION ; GENERATOR ; BCVEGPY |
| WOS研究方向 | Physics |
| WOS类目 | Physics, Particles & Fields |
| 语种 | 英语 |
| 出版者 | SPRINGER |
| WOS记录号 | WOS:000363461700001 |
| URI标识 | http://www.irgrid.ac.cn/handle/1471x/2176486 |
| 专题 | 高能物理研究所 |
| 通讯作者 | Khachatryan, V. |
| 作者单位 | 1.Yerevan Phys Inst, Yerevan 375036, Armenia 2.Inst Hochenergiephys OeAW, Vienna, Austria 3.Natl Ctr Particle & High Energy Phys, Minsk, Byelarus 4.Univ Antwerp, Antwerp, Belgium 5.Vrije Univ Brussel, Brussels, Belgium 6.Univ Libre Bruxelles, Brussels, Belgium 7.Univ Ghent, B-9000 Ghent, Belgium 8.Catholic Univ Louvain, Louvain La Neuve, Belgium 9.Univ Mons, B-7000 Mons, Belgium 10.Ctr Brasileiro Pesquisas Fis, Rio De Janeiro, Brazil |
| 推荐引用方式 GB/T 7714 | Khachatryan, V.,Sirunyan, A. M.,Tumasyan, A.,et al. Measurement of the ratio of the production cross sections times branching fractions of b-c(+/-) -> j/psi pi(+/-) and b-+/- -> j/psi k-+/- and b(b-c(+/-) -> j/psi pi(+/-)pi(+/-)pi(-/+))/b(b-c(+/-) -> j/psi pi(+/-)) in pp collisions at root s=7 tev[J]. Journal of high energy physics,2015(1):30. |
| APA | Khachatryan, V..,Sirunyan, A. M..,Tumasyan, A..,Adam, W..,Bergauer, T..,...&Gorbunov, I..(2015).Measurement of the ratio of the production cross sections times branching fractions of b-c(+/-) -> j/psi pi(+/-) and b-+/- -> j/psi k-+/- and b(b-c(+/-) -> j/psi pi(+/-)pi(+/-)pi(-/+))/b(b-c(+/-) -> j/psi pi(+/-)) in pp collisions at root s=7 tev.Journal of high energy physics(1),30. |
| MLA | Khachatryan, V.,et al."Measurement of the ratio of the production cross sections times branching fractions of b-c(+/-) -> j/psi pi(+/-) and b-+/- -> j/psi k-+/- and b(b-c(+/-) -> j/psi pi(+/-)pi(+/-)pi(-/+))/b(b-c(+/-) -> j/psi pi(+/-)) in pp collisions at root s=7 tev".Journal of high energy physics .1(2015):30. |
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