Constraining the UT angle γ by CP violation parameters in B0→π+π-*

  • We calculate the tree and penguin amplitudes in the B0→π+π- decay channel employing the perturbative QCD factorization approach. Using the amplitudes as input with the theoretical uncertainties sufficiently considered, we constrain the UT angle γ to 53°≤γ≤70°, from the measurements of the CP violation parameters Cπ+π- and Sπ+π- in B0→π+π-. The U-spin breaking effect between B0→π+π- and BS0→K+K- is estimated to be around 30%.
      PCAS:
  • 加载中
  • [1] M. Kobayashi and T. Maskawa, Prog. Theor. Phys., 49: 652 (1973)
    [2] W. Wang, Int. J. Mod. Phys. A, 29: 1430040 (2014) [arXiv:1407.6868 [hep-ph]]
    [3] K. A. Olive et al (Particle Data Group), Chin. Phys. C, 38: 090001 (2014)
    [4] M. Gronau and D. London, Phys. Lett. B, 253: 483 (1991); M. Gronau and D. Wyler, Phys. Lett. B, 265: 172 (1991)
    [5] D. Atwood, I. Dunietz and A. Soni, Phys. Rev. Lett., 78: 3257 (1997) [hep-ph/9612433]; Phys. Rev. D, 63: 036005 (2001) [hep-ph/0008090]
    [6] A. Giri, Y. Grossman, A. Soffer and J. Zupan, Phys. Rev. D, 68: 054018 (2003) [hep-ph/0303187]
    [7] K. Abe et al (Belle Collaboration), Phys. Rev. D, 73: 051106 (2006) [hep-ex/0601032]; Y. Horii et al (Belle Collaboration), Phys. Rev. Lett., 106: 231803 (2011) [arXiv:1103.5951 [hep-ex]]; A. Poluektov et al (Belle Collaboration), Phys. Rev. D, 81: 112002 (2010) [arXiv:1003.3360 [hep-ex]]; T. Aaltonen et al (CDF Collaboration), Phys. Rev. D, 81: 031105 (2010) [arXiv:0911.0425 [hep-ex]]; P. del Amo Sanchez et al (BaBar Collaboration), Phys. Rev. D, 82: 072004 (2010) [arXiv:1007.0504 [hep-ex]]; B. Aubert et al (BaBar Collaboration), Phys. Rev. D, 78: 092002 (2008) [arXiv:0807.2408 [hep-ex]]; Phys. Rev. D, 80: 092001 (2009) [arXiv:0909.3981 [hep-ex]]; P. del Amo Sanchez et al (BaBar Collaboration), Phys. Rev. D, 82: 072006 (2010) [arXiv:1006.4241 [hep-ex]]; J. P. Lees et al (BaBar Collaboration), Phys. Rev. D, 84: 012002 (2011) [arXiv:1104.4472 [hep-ex]]; P. del Amo Sanchez et al (BaBar Collaboration), Phys. Rev. Lett., 105: 21801 (2010) [arXiv:1005.1096 [hep-ex]]; R. Aaij et al (LHCb Collaboration), Phys. Lett. B, 712: 203 (2012) [Erratum ibid. 713: 351 (2012)] [arXiv:1203.3662 [hep-ex]]; Phys. Lett. B, 723: 44 (2013) [arXiv:1303.4646 [hep-ex]]
    [8] J. Charles, O. Deschamps, S. Descotes-Genon, R. Itoh, H. Lacker, A. Menzel, S. Monteil and V. Niess et al, Phys. Rev. D, 84: 033005 (2011) [arXiv:1106.4041 [hep-ph]]
    [9] R. Aaij et al (LHCb Collaboration), JHEP, 1410: 97 (2014) [arXiv:1408.2748 [hep-ex]]; arXiv:1505.07044 [hep-ex]
    [10] R. Fleischer, Phys. Lett. B, 459: 306 (1999) [hep-ph/9903456]
    [11] M. Ciuchini, E. Franco, S. Mishima and L. Silvestrini, JHEP, 1210: 029 (2012) [arXiv:1205.4948 [hep-ph]]
    [12] R. Aaij et al (LHCb Collaboration), Phys. Lett. B, 741: 1 (2015) [arXiv:1408.4368 [hep-ex]]
    [13] C. D. Lu and Z. J. Xiao, Phys. Rev. D, 66: 074011 (2002) [hep-ph/0205134]
    [14] X. Yu, Z. T. Zou and C. D. L, Phys. Rev. D, 88: 054018 (2013) [arXiv:1307.7485]
    [15] J. P. Lees et al (BaBar Collaboration), Phys. Rev. D, 87: 052009 (2013) [arXiv:1206.3525 [hep-ex]]; I. Adachi et al (Belle Collaboration), Phys. Rev. D, 88: 092003 (2013) [arXiv:1302.0551 [hep-ex]]; R. Aaij et al (LHCb Collaboration), JHEP, 1310: 183 (2013) [arXiv:1308.1428 [hep-ex]]
    [16] B. Aubert et al (BaBar Collaboration), Phys. Rev. D, 71: 032005 (2005) [hep-ex/0411016]; R. Itoh et al. (Belle Collaboration), Phys. Rev. Lett., 95: 091601 (2005) [hep-ex/0504030]; P. Krokovny it et al (Belle Collaboration), Phys. Rev. Lett., 97: 081801 (2006) [hep-ex/0605023]; B. Aubert et al (BaBar Collaboration), Phys. Rev. Lett., 99: 231802 (2007) [arXiv:0708.1544 [hep-ex]]
    [17] C. H. V. Chang and H. N. Li, Phys. Rev. D, 55: 5577 (1997) [hep-ph/9607214]; T. W. Yeh and H. N. Li, Phys. Rev. D, 56: 1615 (1997) [hep-ph/9701233]; H. N. Li and Y. M. Wang, JHEP, 1506: 013 (2015) [arXiv:1410.7274 [hep-ph]]
    [18] H. N. Li, Y. L. Shen, Y. M. Wang and H. Zou, Phys. Rev. D, 83: 054029 (2011) [arXiv:1012.4098 [hep-ph]]; H. C. Hu and H. N. Li, Phys. Lett. B, 718: 1351 (2013) [arXiv:1204.6708 [hep-ph]]; H. N. Li, Y. L. Shen and Y. M. Wang, JHEP, 1302: 008 (2013) [arXiv:1210.2978 [hep-ph]]; S. Cheng and Z. J. Xiao, Phys. Rev. D, 90: 076001 (2014) [arXiv:1406.6649 [hep-ph]]; S. Cheng and Z. J. Xiao, Phys. Lett. B, 749: 1 (2015) [arXiv:1505.02909 [hep-ph]]
    [19] H. N. Li, Y. L. Shen and Y. M. Wang, Phys. Rev. D, 85: 074004 (2012) [arXiv:1201.5066 [hep-ph]]
    [20] S. Cheng, Y. Y. Fan, X. Yu, C. D. L and Z. J. Xiao, Phys. Rev. D, 89: 094004 (2014) [arXiv:1402.5501 [hep-ph]]
    [21] H. N. Li, Y. L. Shen and Y. M. Wang, JHEP, 1401: 004 (2014) [arXiv:1310.3672 [hep-ph]]
    [22] C. D. Lu, K. Ukai and M. Z. Yang, Phys. Rev. D, 63: 074009 (2001) [hep-ph/0004213]; C. D. Lu and M. Z. Yang, Eur. Phys. J. C, 23: 275 (2002) [hep-ph/0011238]; Z. T. Zou, X. Yu and C. D. Lu, Phys. Rev. D, 86: 094015 (2012) [arXiv:1203.4120 [hep-ph]]; Q. Qin, Z. T. Zou, X. Yu, H. N. Li and C. D. L, Phys. Lett. B, 732: 36 (2014) [arXiv:1401.1028 [hep-ph]]; W. F. Wang, H. C. Hu, H. N. Li and C. D. L, Phys. Rev. D, 89: 074031 (2014) [arXiv:1402.5280 [hep-ph]]
    [23] A. Ali, G. Kramer, Y. Li, C. D. Lu, Y. L. Shen, W. Wang and Y. M. Wang, Phys. Rev. D, 76: 074018 (2007) [hep-ph/0703162 [hep-ph]]
    [24] A. Khodjamirian, C. Klein, T. Mannel and N. Offen, Phys. Rev. D, 80: 114005 (2009) [arXiv:0907.2842 [hep-ph]]
    [25] A. Khodjamirian, T. Mannel, N. Offen and Y.-M. Wang, Phys. Rev. D, 83: 094031 (2011) [arXiv:1103.2655 [hep-ph]]
    [26] T. Kurimoto, H. N. Li and A. I. Sanda, Phys. Rev. D, 65: 014007 (2002) [hep-ph/0105003]
  • 加载中

Get Citation
Qin Qin, Zhi-Tian Zou, Ying Li and Cai-Dian Lü. Constraining the UT angle γ by CP violation parameters in B0→π+π-*[J]. Chinese Physics C, 2016, 40(3): 031001. doi: 10.1088/1674-1137/40/3/031001
Qin Qin, Zhi-Tian Zou, Ying Li and Cai-Dian Lü. Constraining the UT angle γ by CP violation parameters in B0→π+π-*[J]. Chinese Physics C, 2016, 40(3): 031001.  doi: 10.1088/1674-1137/40/3/031001 shu
Milestone
Received: 2015-09-10
Fund

    Partly Supported by National Science Foundation of China (11175151, 11235005, 11375208, 11447032, 11575151), Natural Science Foundation of Shandong Province (ZR2014AQ013) and the Program for New Century Excellent Talents in University (NCET) by Ministry of Education of P.R. China (NCET-13-0991)

Article Metric

Article Views(1514)
PDF Downloads(73)
Cited by(0)
Policy on re-use
To reuse of Open Access content published by CPC, for content published under the terms of the Creative Commons Attribution 3.0 license (“CC CY”), the users don’t need to request permission to copy, distribute and display the final published version of the article and to create derivative works, subject to appropriate attribution.
通讯作者: 陈斌, bchen63@163.com
  • 1. 

    沈阳化工大学材料科学与工程学院 沈阳 110142

  1. 本站搜索
  2. 百度学术搜索
  3. 万方数据库搜索
  4. CNKI搜索

Email This Article

Title:
Email:

Constraining the UT angle γ by CP violation parameters in B0→π+π-*

  • 1.  Institute of High Energy Physics, Beijing 100049, China
  • 2.  Department of Physics, Yantai University, Yantai, 264005, China
  • 3. Department of Physics, Yantai University, Yantai, 264005, China
  • 4. State Key Laboratory of Theoretical Physics, Institute of Theoretical Physics, Chinese Academy of Sciences, Beijing 100190, China
  • 5. Institute of High Energy Physics, Beijing 100049, China
Fund Project:  Partly Supported by National Science Foundation of China (11175151, 11235005, 11375208, 11447032, 11575151), Natural Science Foundation of Shandong Province (ZR2014AQ013) and the Program for New Century Excellent Talents in University (NCET) by Ministry of Education of P.R. China (NCET-13-0991)

Abstract: We calculate the tree and penguin amplitudes in the B0→π+π- decay channel employing the perturbative QCD factorization approach. Using the amplitudes as input with the theoretical uncertainties sufficiently considered, we constrain the UT angle γ to 53°≤γ≤70°, from the measurements of the CP violation parameters Cπ+π- and Sπ+π- in B0→π+π-. The U-spin breaking effect between B0→π+π- and BS0→K+K- is estimated to be around 30%.

    HTML

Reference (26)

目录

/

DownLoad:  Full-Size Img  PowerPoint
Return
Return