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Measurement of cp violation in b-0 -> d+d- 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Physical review letters
出版日期2016-12-23
卷号117期号:26页码:10
ISSN号0031-9007
DOI10.1103/physrevlett.117.261801
通讯作者Aaij, r.()
英文摘要The cp violation observables s and c in the decay channel b-0 -> d+d- are determined from a sample of proton-proton collisions at center-of-mass energies of 7 and 8 tev, collected by the lhcb experiment and corresponding to an integrated luminosity of 3 fb(-1). the observable s describes cp violation in the interference between mixing and the decay amplitude, and c parametrizes direct cp violation in the decay. the following values are obtained from a flavor-tagged, decay-time-dependent analysis: s = -0.54(-0.16)(+0.17) (stat) +/- 0.05(syst) ,c=0.26(-0.17)(+0.18) (stat) +/- 0.02(syst). these values provide evidence for cp violation at a significance level of 4.0 standard deviations. the phase shift due to higher-order standard model corrections is constrained to a small value of delta phi = -0.16(-0.21)(+0.19) rad.
WOS关键词TOOL
WOS研究方向Physics
WOS类目Physics, Multidisciplinary
语种英语
出版者AMER PHYSICAL SOC
WOS记录号WOS:000390301400002
URI标识http://www.irgrid.ac.cn/handle/1471x/2176611
专题高能物理研究所
通讯作者Aaij, R.
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, LAPP, CNRS IN2P3, Annecy Le Vieux, France
5.Univ Clermont Ferrand, Clermont Univ, CNRS IN2P3, LPC, Clermont Ferrand, France
6.Aix Marseille Univ, CPPM, CNRS IN2P3, Marseille, France
7.Univ Paris 11, LAL, CNRS IN2P3, Orsay, France
8.Univ Paris Diderot, Univ Pierre & Marie Curie, LPNHE, CNRS IN2P3, 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 cp violation in b-0 -> d+d- decays[J]. Physical review letters,2016,117(26):10.
APA Aaij, R..,Adeva, B..,Adinolfi, M..,Ajaltouni, Z..,Akar, S..,...&Zucchelli, S..(2016).Measurement of cp violation in b-0 -> d+d- decays.Physical review letters,117(26),10.
MLA Aaij, R.,et al."Measurement of cp violation in b-0 -> d+d- decays".Physical review letters 117.26(2016):10.

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