Impact factor of Chinese Physics C is 3.6 in 2023 Impact factor of Chinese Physics C is 3.6 in 2022 2021 Impact Factor 2.944
Advanced Search
×
Chinese Physics C> 2018, Vol. 42> Issue(1) : 013101 DOI: 10.1088/1674-1137/42/1/013101

CP asymmetries in Strange Baryon Decays

  • 1.

      Department of Physics, University of Notre Dame du Lac, Notre Dame, IN 46556

  • 2.

     College of Nuclear Science and Technology, Beijing Normal University, Beijing 100875

  • 3.

     Institute of Physics, Academia Sinica, Taipei 115

  • 4.

     Institute of High Energy Physics, Beijing 100049

  • 5.

     Institute of High Energy Physics, Beijing 100049

  • 6.

     University of Chinese Academy of Science, Beijing 100049

  • While indirect and direct CP violation (CPV) has been established in the decays of strange and beauty mesons, no CPV has yet been found for baryons. There are different paths to finding CP asymmetry in the decays of strange baryons; they are all highly non-trivial. The HyperCP Collaboration has probed CPV in the decays of single Ξ and Λ[1]. We discuss future lessons from e+e- collisions at BESⅢ/BEPCⅡ:probing decays of pairs of strange baryons, namely Λ, ∑ and Ξ. Realistic goals are to learn about non-perturbative QCD. One can hope to find CPV in the decays of strange baryons; one can also dream of finding the impact of New Dynamics. We point out that an important new era will start with the BESⅢ/BEPCⅡ data accumulated by the end of 2018. This also supports new ideas to trigger J/ψ → Λ Λ at the LHCb collaboration.
      PCAS:
  • 加载中

  • References

    [1] C. Materniak (HyperCP Collaboration), Nucl. Phys. B (Proc. Suppl.), 187:208 (2009); T. Holmstrom et al, Phys. Rev. Lett., 93:262001 (2004)
    [2] J. H. Christenson et al, Phys. Rev. Lett., 13:138 (1964)
    [3] L. B. Okun, Weak Interactions of Elementary Particles, Pergamon, 1965; the Russian original had appeared in 1963, i.e. clearly before the discovery of CP violation
    [4] C. Patrignani et al (Particle Data Group Collaboration), Chin. Phys. C, 40 (10):100001 (2016)
    [5] A. J. Buras, M. Gorbahn, S. Jger, and M. Jamin, JHEP, 1511:202 (2015); arXiv:1507.06345[hep-ph]
    [6] N. Garron, PoS CD, 15:034 (2016); arXiv:1512.02440[hep-lat]
    [7] J. Charles, A. Le Yaouanc, L. Oliver, O. Pene, and J. C. Raynal, Phys. Rev. D, 58:114021 (1998);[hep-ph/9806347]
    [8] R. Aaij et al (LHCb Collaboration), Nature Phys., (2017); arXiv:1609.05216[hep-ex]
    [9] I. I. Bigi, A. I. Sanda, CP Violation, Second Edition, Cambridge Monographs on Particle Physics, Nuclear Physics and Cosmology (Cambridge University Press) 2009, Sect.4.10 The role of final state interactions Sect.4.11 Resume and outlook, pages 62-70.
    [10] J. F. Donoghue, X.-G. He, and S. Pakvasa, Phys. Rev. D, 34:833 (1986)
    [11] I. I. Bigi, A. I. Sanda, CP Violation, Second Edition, p.140
    [12] J. Tandeau, G. Valencia, Phys. Rev. D, 67:056001 (2003)
    [13] T. D. Lee, C.N. Yang, Phys. Rev., 108:1645 (1957)
    [14] M. Ablikim et al (BES Collaboration), Phys. Rev. D, 81:012003 (2010); arXiv:0911.2972[hep-ex]
    [15] H. B. Li, Front. Phys., 12:121301 (2017);[arXiv:1612.01775[hep-ex]]
    [16] X. W. Kang, H. B. Li, G. R. Lu, and A. Datta, Int. J. Mod. Phys. A, 26:2523 (2011); arXiv:1003.5494[hep-ph]
    [17] M. H. Tixier et al (DM2 Collaboration), Phys. Lett. B, 212:523 (1988)
    [18] M. Jacob and G. C. Wick, Annals Phys., 7:404 (1959); Annals Phys., 281:774 (2000)
    [19] X. W. Kang and H. B. Li, Phys. Lett. B, 684:137 (2010)
    [20] X. W. Kang, H. B. Li, Gong-Ru Lu, and B. S. Zou, Chin. Phys. C, 34:1061 (2010)
    [21] H. Chen and R. G. Ping, Phys. Rev. D, 76:036005 (2007)
    [22] J. D. Richman, An Experimenter's Guide to the Helicity Formalism, CALT-68-1148, available in INSPIRE, Sec. B6.5; R. Kutschke, An Angular Distribution Cookbook, available online, Sec. 13
    [23] G. Fldt and A. Kupsc, Hadronic structure functions in the e+ e- reaction, arXiv:1702.07288[hep-ph]
    [24] J. F. Donoghue, B. R. Holstein, and G. Valencia, Phys. Lett. B, 178:319 (1986)
    [25] X. W. Kang, H. B. Li, and G. R. Lu, Phys. Rev. D, 81:051901 (2010); arXiv:0906.0230[hep-ph]
    [26] Y. H. Ahn, H. Y. Cheng, and S. Oh, Phys. Lett. B, 703:571 (2011); arXiv:1106.0935[hep-ph]
    [27] A. E. Bondar et al (Charm-Tau Factory Collaboration), Phys. Atom. Nucl., 76:1072 (2013); Yad. Fiz., 76 (9):1132 (2013)
    [28] Z. Zhou, Q. Luo, L. Wang, W. Xu, and B. Zhang, Preliminary Concept and Key Technologies of HIEPA Accelerator, talk at the 7th International Particle Accelerator Conference (IPAC 2016) 08-13 May, 2016, Busan, Korea
    [29] A. J. Bevan, Front. Phys. (Beijing), 11 (1):111401 (2016); arXiv:1508.00222[hep-ex]
    [30] X. W. Kang, B. Kubis, C. Hanhart, and U. G. Meiner, Phys. Rev. D, 89:053015 (2014)

  • Access

    加载中

Get Citation
I. I. Bigi, Xian-Wei Kang and Hai-Bo Li. CP asymmetries in Strange Baryon Decays[J]. Chinese Physics C, 2018, 42(1): 013101. doi: 10.1088/1674-1137/42/1/013101
I. I. Bigi, Xian-Wei Kang and Hai-Bo Li. CP asymmetries in Strange Baryon Decays[J]. Chinese Physics C, 2018, 42(1): 013101.  doi: 10.1088/1674-1137/42/1/013101 shu
Milestone
Received: 2017-09-26
Fund

    Supported by National Science Foundation (PHY-1520966), National Natural Science Foundation of China (11335009, 11125525), Joint Large-Scale Scientific Facility Funds of the NSFC and CAS (U1532257), the National Key Basic Research Program of China (2015CB856700), Key Research Program of Frontier Sciences, CAS, (QYZDJ-SSW-SLH003), XWK's work is also supported by MOST (Taiwan) (104-2112-M-001-022)

Article Metric

Article Views(1727)
PDF Downloads(24)
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:

CP asymmetries in Strange Baryon Decays

    Corresponding author: I. I. Bigi,
    Corresponding author: Xian-Wei Kang,
    Corresponding author: Hai-Bo Li,
  • 1.  Department of Physics, University of Notre Dame du Lac, Notre Dame, IN 46556
  • 2. College of Nuclear Science and Technology, Beijing Normal University, Beijing 100875
  • 3. Institute of Physics, Academia Sinica, Taipei 115
  • 4. Institute of High Energy Physics, Beijing 100049
  • 5. Institute of High Energy Physics, Beijing 100049
  • 6. University of Chinese Academy of Science, Beijing 100049
  • Received Date: 2017-09-26
  • Available Online: 2018-01-05
Fund Project:  Supported by National Science Foundation (PHY-1520966), National Natural Science Foundation of China (11335009, 11125525), Joint Large-Scale Scientific Facility Funds of the NSFC and CAS (U1532257), the National Key Basic Research Program of China (2015CB856700), Key Research Program of Frontier Sciences, CAS, (QYZDJ-SSW-SLH003), XWK's work is also supported by MOST (Taiwan) (104-2112-M-001-022)

Abstract: While indirect and direct CP violation (CPV) has been established in the decays of strange and beauty mesons, no CPV has yet been found for baryons. There are different paths to finding CP asymmetry in the decays of strange baryons; they are all highly non-trivial. The HyperCP Collaboration has probed CPV in the decays of single Ξ and Λ[1]. We discuss future lessons from e+e- collisions at BESⅢ/BEPCⅡ:probing decays of pairs of strange baryons, namely Λ, ∑ and Ξ. Realistic goals are to learn about non-perturbative QCD. One can hope to find CPV in the decays of strange baryons; one can also dream of finding the impact of New Dynamics. We point out that an important new era will start with the BESⅢ/BEPCⅡ data accumulated by the end of 2018. This also supports new ideas to trigger J/ψ → Λ Λ at the LHCb collaboration.

    HTML

Reference (30)

目录

Link
IOPScience
SCOAP3
arXiv
Chinese Physical Society
Journal information
Introduction
Editorial Board
Others
Subscribe
Contact us
QQ: 1307685413
Tel: +86-010-88235947
Fax: +86-010-88233126
E-mail: cpc@ihep.ac.cn

  • CPC Website

  • IOP Website

  • CPC WeChat

Copyright © Institute of High Energy Physics, Chinese Academy of Sciences, 19B Yuquan Road, Beijing 100049, China 京ICP备05002789号-1

Supported by: Beijing Renhe Information Technology Co. Ltd  E-mail: info@rhhz.net

/

DownLoad:  Full-Size Img  PowerPoint
Return
Return