Measurement of cp asymmetry in d-0 -> k- k+ decays
文献类型：期刊论文
| 作者 | Aaij, R.40; Adeva, B.39; Adinolfi, M.48; Ajaltouni, Z.6; Akar, S.; Albrechtl, J.10; Alessio, F.40; Alexander, M.53; Ali, S.43,44; Alkhazov, G.31 |
| 刊名 | Physics letters b
 |
| 出版日期 | 2017-04-10 |
| 卷号 | 767页码:177-187 |
| ISSN号 | 0370-2693 |
| DOI | 10.1016/j.physletb.2017.01.061 |
| 通讯作者 | Gersabeck, e.(evelina.gersabeck@cern.ch) ; Stemmle, s.(stemmle@physi.uni-heidelberg.de) |
| 英文摘要 | A measurement of the time-integrated cp asymmetry in the cabibbo-suppressed decay d-0 -> k- k+ is performed using pp collision data, corresponding to an integrated luminosity of 3 fb(-1), collected with the lhcb detector at centre-of-mass energies of 7 and 8 tev. the flavour of the charm meson at production is determined from the charge of the pion in d*(+) -> d-0 pi(+) and d*(-) -> (d) over bar (0)pi(-) decays. the time-integrated cp asymmetry a(cp)(k- k+) is obtained assuming negligible cp violation in charm mixing and in cabibbo-favoured d-0 -> k- pi(+), d+ -> k- pi(+) pi(+) and d+ -> (k) over bar (0)pi(+) decays used as calibration channels. it is found to be a(cp)(k- k+) = (0.14 +/- 0.15 (stat) +/- 0.10 (syst))%. a combination of this result with previous lhcb measurements yields a(cp)(k- k+) = (0.04 +/- 0.12 (stat) +/- 0.10 (syst))%, a(cp)(pi(-) pi(+)) = (0.07 +/- 0.14 (stat) +/- 0.11 (syst))%. these are the most precise measurements from a single experiment. the result for acp(k- k+) is the most precise determination of a time-integrated cpasymmetry in the charm sector to date, and neither measurement shows evidence of cpasymmetry. (c) 2017 the author. published by elsevier b.v. |
| WOS关键词 | PP COLLISIONS ; TEV |
| WOS研究方向 | Astronomy & Astrophysics ; Physics |
| WOS类目 | Astronomy & Astrophysics ; Physics, Nuclear ; Physics, Particles & Fields |
| 语种 | 英语 |
| 出版者 | ELSEVIER SCIENCE BV |
| WOS记录号 | WOS:000397861700027 |
| URI标识 | http://www.irgrid.ac.cn/handle/1471x/2176728 |
| 专题 | 高能物理研究所 |
| 通讯作者 | Gersabeck, E.; Stemmle, S. |
| 作者单位 | 1.Ctr Brasileiro Pesquisas Fis, 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 Clermont Ferrand 2, Univ Blaise Pascal, 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 06, Univ Paris Diderot, CNRS, IN2P3,LPNHE, Paris, France 9.Rhein Westfal TH Aachen, Inst Phys 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 cp asymmetry in d-0 -> k- k+ decays[J]. Physics letters b,2017,767:177-187. |
| APA | Aaij, R..,Adeva, B..,Adinolfi, M..,Ajaltouni, Z..,Akar, S..,...&Zucchelli, S..(2017).Measurement of cp asymmetry in d-0 -> k- k+ decays.Physics letters b,767,177-187. |
| MLA | Aaij, R.,et al."Measurement of cp asymmetry in d-0 -> k- k+ decays".Physics letters b 767(2017):177-187. |
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