Measurement of the b-+/- production cross-section in pp collisions at root s=7 and 13 tev
文献类型：期刊论文
| 作者 | Aaij, R.42; Adeva, B.41; Adinolfi, M.50; Ajaltouni, Z.5; Akar, S.61; Albrecht, J.10; Alessio, F.42; Alexander, M.55; Albero, A. Alfonso40; Ali, S.45 |
| 刊名 | Journal of high energy physics
 |
| 出版日期 | 2017-12-06 |
| 期号 | 12页码:25 |
| ISSN号 | 1029-8479 |
| 关键词 | B physics Hadron-hadron scattering (experiments) Particle and resonance production |
| DOI | 10.1007/jhep12(2017)026 |
| 通讯作者 | Yin, h.(hang.yin@cern.ch) |
| 英文摘要 | The production of b +/- mesons is studied in pp collisions at centre-of-mass energies of 7 and 13 tev, using b-+/- -> j/psi k-+/- decays and data samples corresponding to 1.0 fb(-1) and 0.3 fb(-1), respectively. the production cross-sections summed over both charges and integrated over the transverse momentum range 0 < pt < 40 gev/c and the rapidity range 2.0 < y < 4.5 are measured to be sigma-(pp -> b-+/- x, root s = 7 tev) = 43.0 +/- 0.2 +/- 2.5 +/- 1.7 mu b, sigma(pp -> b-+/- x, root s = 13 tev) = 86.6 +/- 0.5 +/- 5.4 +/- 3.4 mu b, where the first uncertainties are statistical, the second are systematic, and the third are due to the limited knowledge of the b-+/- -> j/psi k-+/- branching fraction. the ratio of the cross-section at 13 tev to that at 7 tev is determined to be 2.02 +/- 0.02 (stat) +/- 0.12 (syst). differential cross-sections are also reported as functions of pi, and y. all results are in agreement with theoretical calculations based on the state-of-art fixed next-to-leading order quantum chromodynamics. |
| WOS关键词 | DECAY |
| 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:000417757900004 |
| URI标识 | http://www.irgrid.ac.cn/handle/1471x/2178283 |
| 专题 | 高能物理研究所 |
| 通讯作者 | Yin, H. |
| 作者单位 | 1.CBPF, Rio De Janeiro, Brazil 2.Univ Fed Rio de Janeiro, Rio De Janeiro, Brazil 3.Tsinghua Univ, Ctr High Energy Phys, Beijing, Peoples R China 4.Univ Savoie Mont Blanc, CNRS, IN2P3, LAPP, Annecy Le Vieux, France 5.Univ Blaise Pascal, Clermont Univ, CNRS, IN2P3,LPC, Clermont Ferrand, France 6.Aix Marseille Univ, CNRS, IN2P3, CPPM, Marseille, France 7.Univ Paris 11, CNRS, IN2P3, LAL, Orsay, France 8.Univ Paris Diderot, Univ Paris 06, CNRS, IN2P3,LPNHE, Paris, France 9.Rhein Westfal TH Aachen, Phys Inst 1, Aachen, Germany 10.Tech Univ Dortmund, Fak Phys, Dortmund, Germany |
| 推荐引用方式 GB/T 7714 | Aaij, R.,Adeva, B.,Adinolfi, M.,et al. Measurement of the b-+/- production cross-section in pp collisions at root s=7 and 13 tev[J]. Journal of high energy physics,2017(12):25. |
| APA | Aaij, R..,Adeva, B..,Adinolfi, M..,Ajaltouni, Z..,Akar, S..,...&Zucchelli, S..(2017).Measurement of the b-+/- production cross-section in pp collisions at root s=7 and 13 tev.Journal of high energy physics(12),25. |
| MLA | Aaij, R.,et al."Measurement of the b-+/- production cross-section in pp collisions at root s=7 and 13 tev".Journal of high energy physics .12(2017):25. |
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