Λ-Hyperon Global Polarization in Au+Au Collisions at RHIC

  • We present the Λ-hyperon global polarization in Au+Au collisions at sNN=62GeV and 200GeV measured with the STAR detector at RHIC. The observed Λ-hyperon global polarization is consistent with zero, what is in agreement with recent measurements of Λ global polarization, as well as φ(1020) and K*0(892) vector mesons spin alignment with respect to the reaction plane. The possible dependence of the global polarization on relative azimuthal angle between the orbital momentum of the system and the hyperon 3-momentum is discussed. The corresponding systematic uncertainty due to detector acceptance is found to be less than 20%.
  • 加载中
  • [1] . LIANG Z T, WANG X N. Phys. Rev. Lett., 2005, 94:102301; Erratum: ibid. 2006, 96: 0399012. Voloshin S A. arXiv:nucl-th/04100893. LIANG Z T, WANG X N. Phys. Lett., 2005, B629: 204. GAO Jian-Hua, LIANG Z T. Talk at International Work-shop on “Hadron Physics and Property of High Baryon Density Matter". November 24, 2006, Xi'an, China5. Selyuzhenkov I (STAR Collaboration). Rom. Rep. Phys.,2006, 58: 0496. Selyuzhenkov I (STAR Collaboration). J. Phys., 2006,G32: S5577. CHEN J H (STAR Collaboration). Talk at QM2006 November 13, 2006, Shanghai, China8. Eidelman S et al. (Particle Data Group). Phys. Lett., 2004,B592: 19. Anderson M et al. Nucl. Instrum. Methods, 2003, A499:65910. Voloshin S, ZHANG Y. Z. Phys., 1996, C70: 665.arXiv:hep-ph/940728211. Poskanzer A M, Voloshin S A. Phys. Rev., 1998, C58: 167112. Ackermann K H et al. (STAR Collaboration). Nucl. Instrum. Methods, 2003, A499: 71313. Selyuzhenkov I (STAR Collaboration). AIP Conf. Proc.,2006, 870: 712
  • 加载中

Get Citation
Selyuzhenkov. Λ-Hyperon Global Polarization in Au+Au Collisions at RHIC[J]. Chinese Physics C, 2007, 31(12): 1185-1188.
Selyuzhenkov. Λ-Hyperon Global Polarization in Au+Au Collisions at RHIC[J]. Chinese Physics C, 2007, 31(12): 1185-1188. shu
Milestone
Received: 2007-07-17
Revised: 1900-01-01
Article Metric

Article Views(2856)
PDF Downloads(587)
Cited by(0)
Policy on re-use
To reuse of subscription content published by CPC, the users need to request permission from CPC, unless the content was published under an Open Access license which automatically permits that type of reuse.
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:

Λ-Hyperon Global Polarization in Au+Au Collisions at RHIC

    Corresponding author: Selyuzhenkov,
  • Wayne State University, 666 W Hancock, Detroit MI 48201, USA

Abstract: We present the Λ-hyperon global polarization in Au+Au collisions at sNN=62GeV and 200GeV measured with the STAR detector at RHIC. The observed Λ-hyperon global polarization is consistent with zero, what is in agreement with recent measurements of Λ global polarization, as well as φ(1020) and K*0(892) vector mesons spin alignment with respect to the reaction plane. The possible dependence of the global polarization on relative azimuthal angle between the orbital momentum of the system and the hyperon 3-momentum is discussed. The corresponding systematic uncertainty due to detector acceptance is found to be less than 20%.

    HTML

Reference (1)

目录

/

DownLoad:  Full-Size Img  PowerPoint
Return
Return