Search for cp violation in the phase space of d-0 -> pi(+)pi(-)pi(+)pi(-) decays
文献类型：期刊论文
| 作者 | Aaij, R.40; Adeva, B.39; Adinolfi, M.48; Ajaltouni, Z.5; Akar, S.6; Albrecht, J.10; Alessio, F.40; Alexander, M.53; Ali, S.43; Alkhazov, G.31 |
| 刊名 | Physics letters b
 |
| 出版日期 | 2017-06-10 |
| 卷号 | 769页码:345-356 |
| ISSN号 | 0370-2693 |
| DOI | 10.1016/j.physletb.2017.03.062 |
| 通讯作者 | Chen, s.(shanzhen.chen@cern.ch) |
| 英文摘要 | A search for time-integrated cp violation in the cabibbo-suppressed decay d-0 -> pi(+)pi(-)pi(+)pi(-) is performed using an unbinned, model-independent technique known as the energy test. this is the first application of the energy test in four-body decays. the search is performed for p-even cp asymmetries and, for the first time, is extended to probe the p-odd case. using proton proton collision data corresponding to an integrated luminosity of 3.0 fb(-1) collected by the lhcb detector at centre-of-mass energies of root s = 7 tev and 8 tev, the world's best sensitivity to cp violation in this decay is obtained. the data are found to be consistent with the hypothesis of cp symmetry with a p-value of (4.6 +/- 0.5)% in the p-even case, and marginally consistent with a p-value of (0.6 +/- 0.2)% in the p-odd case, corresponding to a significance for cp non -conservation of 2.7 standard deviations. (c) 2017 the author(s). published by elsevier b.v. |
| WOS关键词 | TEV PP COLLISIONS ; PRODUCTION ASYMMETRY |
| 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:000402342500054 |
| URI标识 | http://www.irgrid.ac.cn/handle/1471x/2177370 |
| 专题 | 高能物理研究所 |
| 通讯作者 | Chen, S. |
| 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 Mt Blanc, CNRS, IN2P3, LAPP, Annecy Le Vieux, France 5.Univ Blaise Pascal, CNRS, IN2P3, Clermont Univ,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, CNRS, IN2P3, LPNHE,Univ Pierre & Marie Curie, Paris, France 9.RVVTH Aachen Univ, 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. Search for cp violation in the phase space of d-0 -> pi(+)pi(-)pi(+)pi(-) decays[J]. Physics letters b,2017,769:345-356. |
| APA | Aaij, R..,Adeva, B..,Adinolfi, M..,Ajaltouni, Z..,Akar, S..,...&Zucchelli, S..(2017).Search for cp violation in the phase space of d-0 -> pi(+)pi(-)pi(+)pi(-) decays.Physics letters b,769,345-356. |
| MLA | Aaij, R.,et al."Search for cp violation in the phase space of d-0 -> pi(+)pi(-)pi(+)pi(-) decays".Physics letters b 769(2017):345-356. |
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