D0-(D)over-bar0 mixing and CP violation results from Belle

被引:0
|
作者
Nisar, N. K. [1 ]
机构
[1] Tata Inst Fundamental Res, Homi Bhabha Rd, Bombay 400005, Maharashtra, India
关键词
meson-antimeson mixing; CP violation; charm sector; time-integrated CP asymmetry; decays of charm mesons; charm studies from Belle;
D O I
10.1016/j.nuclphysbps.2015.09.216
中图分类号
O412 [相对论、场论]; O572.2 [粒子物理学];
学科分类号
摘要
We report the results on D-0-(D) over bar (0) mixing in the decays of D-0 -> K+pi(-) and D-0 -> K-s(0) pi(+)pi(-) , and CP violation in D-0 -> pi(0)pi(0) using a data sample with an integrated luminosity of about 1 ab(-1) recorded with the Belle detector, at different center of mass energies. The mixing is observed in D-0 -> K+pi(-) with the mixing parameters x'(2) = (0.09 +/- 0.22) x 10(-3), y' = (4.6 +/- 3.4) x 10(-3) and the ratio of doubly Cabibbo-suppressed to Cabibbo-favored decay rates R-D = (3.53 +/- 0.13) x 10(-3), where the quoted uncertainties combine both statistical and systematic contributions. For the D-0 -> K-s(0) pi(+)pi(-) decay, assuming CP conservation we measure mixing parameters x = (0.56 +/- 0.19(-0.09-0.09)(+0.03+0.06))% and y = (0.30 +/- 0.15(-0.05-0.06)(+0.04+0.03))%, where the uncertainties are statistical, experimental systematics, and that due to amplitude model. We measure the mixing parameters allowing CP violation for this decay mode, and obtain vertical bar q/p vertical bar = 0.90(-0.15-0.04-0.05)(+0.16+0.05+0.06) and arg(q/p)=(-6 +/- 11 +/- 3(-4)(+3))degrees that are consistent with no CP violation. The time-integrated CP asymmetry in the decay D-0 > F071-0 is measured to be, [-0.03 +/- 0.64(stat) +/- 0.10(syst)]%, consistent with CP conservation. We also present an updated measurement of CP asymmetry in D-0 -> K-s(0) pi(0).
引用
收藏
页码:1344 / 1348
页数:5
相关论文
共 50 条
  • [1] An overview of D0-(D)over-bar0 mixing and CP violation
    Xing Zhi-Zhong
    CHINESE PHYSICS C, 2008, 32 (06) : 483 - 487
  • [2] D0-(D)over-bar0 mixing and CP violation at BES-III
    Li Hai-Bo
    CHINESE PHYSICS C, 2008, 32 (06) : 470 - 476
  • [3] D0-(D)over-bar0 mixing and other charm decays at Belle
    Zhao Li
    Zhang Zi-Ping
    CHINESE PHYSICS C, 2010, 34 (06) : 774 - 779
  • [4] How large can the SM contribution to CP violation in D0-(D)over-bar0 mixing be?
    Bobrowski, M.
    Lenz, A.
    Riedl, J.
    Rohrwild, J.
    JOURNAL OF HIGH ENERGY PHYSICS, 2010, (03):
  • [5] Measurement of D0-(D)over-bar0 mixing and search for CP violation in D0 → K+K-, π+π- decays with the full Belle data set
    Staric, M.
    Abdesselam, A.
    Adachi, I.
    Aihara, H.
    Arinstein, K.
    Asner, D. M.
    Aushev, T.
    Ayad, R.
    Aziz, T.
    Babu, V.
    Badhrees, I.
    Bahinipati, S.
    Bakich, A. M.
    Bansal, V.
    Biswal, J.
    Bondar, A.
    Bonvicini, G.
    Bozek, A.
    Bracko, M.
    Browder, T. E.
    Cervenkov, D.
    Chekelian, V.
    Chen, A.
    Cheon, B. G.
    Chilikin, K.
    Chistov, R.
    Cho, K.
    Chobanova, V.
    Choi, Y.
    Cinabro, D.
    Dalseno, J.
    Danilov, M.
    Dolezal, Z.
    Dutta, D.
    Eidelman, S.
    Epifanov, D.
    Farhat, H.
    Fast, J. E.
    Ferber, T.
    Fulsom, B. G.
    Gaur, V.
    Gabyshev, N.
    Ganguly, S.
    Garmash, A.
    Gillard, R.
    Glattauer, R.
    Goh, Y. M.
    Goldenzweig, R.
    Golob, B.
    Grygier, J.
    PHYSICS LETTERS B, 2016, 753 : 412 - 418
  • [6] Measurements of D0-(D)over-bar0 mixing and searches for CP violation:: HFAG combination of all data
    Schwartz, A. J.
    CHINESE PHYSICS C, 2008, 32 (06) : 477 - 482
  • [7] IMPLICATIONS OF D0- (D)over-bar0 MIXING FOR NEW PHYSICS
    Petrov, Alexey A.
    PROCEEDINGS OF THE CONFERENCE ON CONTINUOUS ADVANCES IN QCD 2008, 2008, : 79 - 89
  • [8] MEASUREMENT OF CP-VIOLATION IN D0/(D)over-bar0
    Morello, Michael J.
    MODERN PHYSICS LETTERS A, 2012, 27 (36)
  • [9] D0-(D)over-bar0 mixing in Υ(1S)→D0(D)over-bar0 decay at a super-B factory
    Li, Hai-Bo
    Yang, Mao-Zhi
    PHYSICAL REVIEW D, 2006, 74 (09):
  • [10] Impact of colored scalars on D0-(D)over-bar0 mixing in diquark models
    Chen, Chuan-Hung
    PHYSICS LETTERS B, 2009, 680 (02) : 133 - 136