Λb0-baryon production in pp collisions in the general-mass variable-flavour-number scheme, and comparisonwith CMS and LHCb data

  • We calculate the next-to-leading-order cross section for the inclusive production of Λb baryons in m pp collisions in the general-mass variable-flavor-number scheme. We use realistic evolved non-perturbative fragmentation functions obtained from fits to m B-meson production in e+e- annihilation and compare our results for transverse-momentum and rapidity distributions with recent experimental data from the CMS and the LHCb collaborations at the CERN LHC. We find satisfactory agreement in general, with some indication for the need to modify the available fragmentation functions at larger values of the scale variable.
      PCAS:
  • 加载中
  • [1] D. Acosta et al (CDF Collaboration), Phys. Rev. D, 71:032001 (2005)[hep-ex/0412071]
    [2] A. Abulencia et al (CDF Collaboration), Phys. Rev. D, 75:012010 (2007)[hep-ex/0612015]
    [3] V. Khachatryan et al (CMS Collaboration), Phys. Rev. Lett., 106:112001 (2011)[arXiv:1101.0131[hep-ex]]
    [4] S. Chatrchyan et al (CMS Collaboration), Phys. Rev. Lett., 106:252001 (2011)[arXiv:1104.2892[hep-ex]]
    [5] S. Chatrchyan et al (CMS Collaboration), Phys. Rev. D, 84:052008 (2011)[arXiv:1106.4048[hep-ex]]
    [6] G. Aad et al (ATLAS Collaboration), JHEP, 1310:042 (2013)[arXiv:1307.0126[hep-ex]]
    [7] R. Aaij et al (LHCb Collaboration), JHEP, 1204:093 (2012)[arXiv:1202.4812[hep-ex]]
    [8] V. Khachatryan et al (CMS Collaboration), Phys. Lett. B, 771:435 (2017)[arXiv:1609.00873[hep-ex]]
    [9] S. Chatrchyan et al (CMS Collaboration), Phys. Lett. B, 714:136 (2012)[arXiv:1205.0594[hep-ex]]
    [10] R. Aaij et al (LHCb Collaboration), Chin. Phys. C, 40:011001 (2016)[arXiv:1509.00292[hep-ex]]
    [11] Y. Amhis et al (HFLAV Collaboration), Eur. Phys. J. C, 77:895 (2017)[arXiv:1612.07233[hep-ex]]
    [12] R. Aaij et al (LHCb Collaboration), Phys. Rev. D, 85:032008 (2012)[arXiv:1111.2357[hep-ex]]
    [13] R. Aaij et al (LHCb Collaboration), JHEP, 1408:143 (2014)[arXiv:1405.6842[hep-ex]]
    [14] B. A. Kniehl, G. Kramer, I. Schienbein, and H. Spiesberger, Phys. Rev. D, 77:014011 (2008)[arXiv:0705.4392[hep-ph]]
    [15] A. Heister et al (ALEPH Collaboration), Phys. Lett. B, 512:30 (2001)[hep-ex/0106051]
    [16] G. Abbiendi et al (OPAL Collaboration), Eur. Phys. J. C, 29:463 (2003)[hep-ex/0210031]
    [17] K. Abe et al (SLD Collaboration), Phys. Rev. Lett., 84:4300 (2000)[hep-ex/9912058]
    [18] K. Abe et al (SLD Collaboration), Phys. Rev. D, 65:092006 (2002); Phys. Rev. D, 66:079905 (2002)[hep-ex/0202031]
    [19] J. Beringer et al (Particle Data Group), Phys. Rev. D, 86:010001 (2012)
    [20] T. Aaltonen et al (CDF Collaboration), Phys. Rev. D, 77:072003 (2008)[arXiv:0801.4375[hep-ex]]
    [21] B. A. Kniehl, G. Kramer, I. Schienbein, and H. Spiesberger, Phys. Rev. D, 71:014018 (2005)[hep-ph/0410289]
    [22] B. A. Kniehl, G. Kramer, I. Schienbein, and H. Spiesberger, Eur. Phys. J. C, 41:199 (2005)[hep-ph/0502194]
    [23] B. A. Kniehl, G. Kramer, I. Schienbein, and H. Spiesberger, Phys. Rev. D, 84:094026 (2011)[arXiv:1109.2472[hep-ph]]
    [24] B. A. Kniehl, G. Kramer, I. Schienbein, and H. Spiesberger, Eur. Phys. J. C, 75:140 (2015)[arXiv:1502.01001[hep-ph]]
    [25] B. A. Kniehl, G. Kramer, I. Schienbein, and H. Spiesberger, Eur. Phys. J. C, 72:2082 (2012)[arXiv:1202.0439[hep-ph]]
    [26] G. Kramer and H. Spiesberger, Phys. Lett. B, 753:542 (2016)[arXiv:1509.07154[hep-ph]]
    [27] R. Aaij et al (LHCb Collaboration), JHEP, 1308:117 (2013)[arXiv:1306.3663[hep-ex]]
    [28] S. Dulat et al, Phys. Rev. D, 93:033006 (2016)[arXiv:1506.07443[hep-ph]]
    [29] J. Abdallah et al (DELPHI Collaboration), Eur. Phys. J. C, 71:1557 (2011)[arXiv:1102.4748[hep-ex]]
    [30] C. Patrignani et al (Particle Data Group), Chin. Phys. C, 40:100001 (2016)
    [31] S. Alioli, P. Nason, C. Oleari, and E. Re, JHEP, 1006:043 (2010)[arXiv:1002.2581[hep-ph]]
    [32] S. Frixione, P. Nason, and G. Ridolfi, JHEP, 0709:126 (2007)[arXiv:0707.3088[hep-ph]]
    [33] T. Sjstrand, S. Mrenna, and P. Z. Skands, JHEP, 0605:026 (2006)[hep-ph/0603175]
    [34] M. Cacciari, M. Greco, and P. Nason, JHEP, 9805:007 (1998)[hep-ph/9803400]
    [35] M. Cacciari, S. Frixione, N. Houdeau, M. L. Mangano, P. Nason, and G. Ridolfi, JHEP, 1210:137 (2012)[arXiv:1205.6344[hep-ph]]
  • 加载中

Get Citation
G. Kramer and H. Spiesberger. Λb0-baryon production in pp collisions in the general-mass variable-flavour-number scheme, and comparisonwith CMS and LHCb data[J]. Chinese Physics C, 2018, 42(8): 083102. doi: 10.1088/1674-1137/42/8/083102
G. Kramer and H. Spiesberger. Λb0-baryon production in pp collisions in the general-mass variable-flavour-number scheme, and comparisonwith CMS and LHCb data[J]. Chinese Physics C, 2018, 42(8): 083102.  doi: 10.1088/1674-1137/42/8/083102 shu
Milestone
Received: 2018-03-29
Article Metric

Article Views(1657)
PDF Downloads(23)
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:

Λb0-baryon production in pp collisions in the general-mass variable-flavour-number scheme, and comparisonwith CMS and LHCb data

  • 1.  Ⅱ. Institut fü
  • 2. Institut fü
  • 3. Centre for Theoretical and Mathematical Physics and Department of Physics, University of Cape Town, Rondebosch 7700, South Africa

Abstract: We calculate the next-to-leading-order cross section for the inclusive production of Λb baryons in m pp collisions in the general-mass variable-flavor-number scheme. We use realistic evolved non-perturbative fragmentation functions obtained from fits to m B-meson production in e+e- annihilation and compare our results for transverse-momentum and rapidity distributions with recent experimental data from the CMS and the LHCb collaborations at the CERN LHC. We find satisfactory agreement in general, with some indication for the need to modify the available fragmentation functions at larger values of the scale variable.

    HTML

Reference (35)

目录

/

DownLoad:  Full-Size Img  PowerPoint
Return
Return