Impact factor of Chinese Physics C is 3.6 in 2022 2021 Impact Factor 2.944
Advanced Search
Chinese Physics C> 2015, Vol. 39> Issue(11) : 113104 DOI: 10.1088/1674-1137/39/11/113104

Near-threshold η production in pp collisions

  •  Department of Physics, Zhengzhou University, Zhengzhou 450001, China

  • We study near-threshold η meson production in pp collisions within an effective Lagrangian approach combined with the isobar model, by allowing for the various intermediate nucleon resonances due to the π, η, and ρ-meson exchanges. It is shown that the ρ-meson exchange is the dominant excitation mechanism for these resonances, and the contribution from the N*(1720) is dominant. The total cross section data can be reasonably reproduced, and the anisotropic angular distributions of the emitted η meson are consistent with experimental measurements. Besides, the invariant mass spectra of pp and ρη explain the data well at excess energy of 15 MeV, and are basically consistent with the data at excess energy of 40 MeV. However, our model calculations cannot reasonably account for the two-peak structure in the pη distribution at excess energies of 57 and 72 MeV, which suggests that a more complicated mechanism is needed at higher energy region.
      PCAS:
  • 加载中

  • References

    [1] Hanhart C. Phys. Rept., 2004, 397: 155
    [2] Bergdolt A M, Bergdolt G, Bing O et al. Phys. Rev. D, 1993, 48: 2969
    [3] Chiavassa E, Dellacasa, De Marco N et al. Phys. Lett. B, 1994, 322: 270
    [4] Calén H, Carius S, Fransson K et al. Phys. Lett. B, 1996, 366: 39
    [5] Hibou F, Bing O, Boivin M et al. Phys. Lett. B, 1998, 438: 41
    [6] Smyrski J, Wuestner P, Budzanowski A et al. Phys. Lett. B, 2000, 474: 182
    [7] Agakishiev G et al. (HADES collaboration). Eur. Phys. J. A, 2012, 48: 74
    [8] Petrén H Bargholtz C, Bashkanov M et al. Phys. Rev. C, 2010, 82: 055206
    [9] Czyżykiewicz R, Moskal P, Adam H et al. Phys. Rev. Lett., 2007, 98: 122003
    [10] Pauly C. Light Meson Prodcution in pp Reactions at CELSIUS/WASA above the η Threshold (Ph. D. thesis). Hamburg: University of Hamburg, 2006
    [11] Calén H, Dyring J, Gustafsson K et al. Phys. Rev. Lett., 1997, 79: 2642
    [12] Calén H, Dyring J, Gustafsson K et al. Phys. Rev. C, 1998, 58: 2667
    [13] Calén H, Dyring J, Gustafsson K et al. Phys. Rev. Lett., 1998, 80: 2069
    [14] Moskal P, Czyżykiewicz R, Adam H et al. Phys. Rev. C, 2009, 79: 015208
    [15] Batinić M, Svarc A, Lee T S H. Phys. Scripta, 1997, 56: 321
    [16] Moalem A, Gedalin E, Razdolskaya L et al. Nucl. Phys. A, 1996, 600: 445
    [17] Germond J F, Wilkin C. Nucl. Phys. A, 1990, 518: 308
    [18] Laget J M, Wellers F, Lecolley J F. Phys. Lett. B, 1991, 257: 254
    [19] Vetter T, Engel A, Biró T et al. Phys. Lett. B, 1991, 263: 153
    [20] Alvaredo B L, Oset E. Phys. Lett. B, 1994, 324: 125
    [21] Pena M T, Garcilazo H, Riska D O. Nucl. Phys. A, 2001, 683: 322
    [22] Shyam R. Phys. Rev. C, 2007, 75: 055201
    [23] Gedalin E, Moalem A, Razdolskaya L. Nucl. Phys. A, 1998, 634: 368
    [24] Santra A B, Jain B K. Nucl. Phys. A, 1998, 634: 309
    [25] Fäldt G, Wilkin C. Phys. Scripta, 2001, 64: 427
    [26] Baru V, Gasparyan, Haidenbauer et al. Phys. Rev. C, 2003, 67: 024002
    [27] Nakayama K, Speth J, Lee T S H. Phys. Rev. C, 2002, 65: 045210
    [28] Nakayama K, Haidenbauer J, Hanhart C et al. Phys. Rev. C, 2003, 68: 045201
    [29] Bernard V, Kaiser N, Meissner Ulf-G. Eur. Phys. J. A, 1999, 4: 259
    [30] Moskal P, Wolke M, Khoukaz A et al. Prog. Part. Nucl. Phys., 2002, 49: 1
    [31] Riska D O, Brown G. Nucl. Phys. A, 2001, 679: 577
    [32] CAO X, Lee X G. Phys. Rev. C, 2008, 78: 035207
    [33] Nakayama K, Oh Y, Haberzettl H. J. Korean Phys. Soc, 2011, 59: 224
    [34] Deloff A. Phys. Rev. C, 2004, 69: 035206
    [35] XIE J J, Wilkin C, ZOU B S. Phys. Rev. C, 2008, 77: 058202
    [36] XIE J J, ZOU B S. Phys. Lett. B, 2007, 649: 405
    [37] XIE J J, ZOU B S, Chaing H Q. Phys. Rev. C, 2008, 77: 015206
    [38] LÜ Q F, LIU X H, XIE J J et al. Mod. Phys. Lett. A, 2014, 29: 1450012
    [39] LÜ Q F, XIE J J, LI D M. Phys. Rev. C, 2014, 90: 034002
    [40] LÜ Q F, WANG R, XIE J J et al. Phys. Rev. C, 2015, 91: 035204
    [41] Machleidt R, Holinde K, Elster C. Phys. Rep., 1987, 149: 1
    [42] Machleidt R. Adv. Nucl. Phys., 1989, 19: 189
    [43] Brockmann R, Machleidt R, Phys. Rev. C, 1990, 42: 1965
    [44] Tsushima K, HUANG S W, Faessler A. Phys. Lett. B, 1994, 337: 245
    [45] Tsushima K, Sibirtsev A, Thomas A W. Phys. Lett. B, 1997, 390: 29
    [46] Tsushima K, Sibirtsev A, Thomas A W et al. Phys. Rev. C, 1999, 59: 369; Erratum-ibid. C, 2000, 61: 029903
    [47] Sibirtsev A, Cassing W. arXiv:nucl-th/9802019
    [48] Sibirtsev A, Tsushima K, Cassing W et al. Nucl. Phys. A, 1999, 646: 427
    [49] ZOU B S, Hussain F. Phys. Rev. C, 2003, 67: 015204
    [50] Olive K A et al. (Particale Data Group). Chin. Phys. C, 2014, 38: 090001
    [51] Penner G, Mosel U. Phys. Rev. C, 2002 66: 055211; 055212; Shklyar V, Lenske H, Mosel U. Phys. Rev. C, 2005, 72: 015210
    [52] Feuster T, Mosel U, Phys. Rev. C, 1998, 58: 457
    [53] Feuster T, Mosel U. Phys. Rev. C, 1999, 59: 460
    [54] LIANG W H, SHEN P N, WANG J X et al. J. Phys. G, 2002, 28: 333
    [55] Maeda Y et al. (ANKE collaboration). Phys. Rev. C, 2008, 77: 015204
    [56] Moskal P, Adm H H, Budzanowski A et al. Phys. Rev. C, 2004, 69: 025203
    [57] Abdel-Bary M et al. (COSY-TOF collaboration). Eur. Phys. J. A, 2003, 16: 127
    [58] Calen H, Dyring J, Fransson K et al. Phys. Lett. B, 1999, 458: 190
    [59] Balestra F, Bedfer Y, Bertini R et al. Phys. Rev. C, 2004, 69: 064003
    [60] Fix A, Arenhoevel H. Phys. Rev. C, 2004, 69: 014001
    [61] CAO X, ZOU B S, XU H S. Phys. Rev. C, 2010, 81: 065201
    [62] Shah N. AIP Conf. Proc, 2011, 1374: 402
    [63] Krusche B, Wilkin C. Prog. Part. Nucl. Phys, 2014, 80: 43

  • Access

    加载中

Get Citation
LI De-Min and Near-threshold η production in pp collisions[J]. Chinese Physics C, 2015, 39(11): 113104. doi: 10.1088/1674-1137/39/11/113104
LI De-Min and Near-threshold η production in pp collisions[J]. Chinese Physics C, 2015, 39(11): 113104.  doi: 10.1088/1674-1137/39/11/113104 shu
Milestone
Received: 2015-01-23
Revised: 2015-06-08
Fund

    Supported by National Natural Science Foundation of China (11105126)

Article Metric

Article Views(1351)
PDF Downloads(18)
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:

Near-threshold η production in pp collisions

    Corresponding author: LI De-Min,
  • Department of Physics, Zhengzhou University, Zhengzhou 450001, China
  • Received Date: 2015-01-23
  • Accepted Date: 2015-06-08
  • Available Online: 2015-11-20
Fund Project:  Supported by National Natural Science Foundation of China (11105126)

Abstract: We study near-threshold η meson production in pp collisions within an effective Lagrangian approach combined with the isobar model, by allowing for the various intermediate nucleon resonances due to the π, η, and ρ-meson exchanges. It is shown that the ρ-meson exchange is the dominant excitation mechanism for these resonances, and the contribution from the N*(1720) is dominant. The total cross section data can be reasonably reproduced, and the anisotropic angular distributions of the emitted η meson are consistent with experimental measurements. Besides, the invariant mass spectra of pp and ρη explain the data well at excess energy of 15 MeV, and are basically consistent with the data at excess energy of 40 MeV. However, our model calculations cannot reasonably account for the two-peak structure in the pη distribution at excess energies of 57 and 72 MeV, which suggests that a more complicated mechanism is needed at higher energy region.

    HTML

Reference (63)

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