pp final state interaction in J=/ψ→γpp

ZENG Zhuo-Quan; GUO Xin-Heng; SHEN Peng-Nian; DING Yi-Bing

doi:10.1088/1674-1137/36/5/004

Chinese Physics C> 2012, Vol. 36> Issue(5) : 399-402 DOI: 10.1088/1674-1137/36/5/004

pp final state interaction in J=/ψ→γpp

Abstract
HTML
Reference
Related

PDF

Abstract：
The phenomenon of the near pp-threshold enhancement observed in the J=/ψ→γpp decay is studied by using the enhancement factor method with a simpler one-pion-exchange potential between p and p. The Jost function caused by the mentioned potential is perturbatively calculated in the zero-th order approximation, and the corresponding enhancement factor is obtained. It is found that such a final state interaction offers an important contribution to the decay width near the pp-threshold, although it is not large enough. To explain the decay data, a phenomenological factor G(p) with the form of 285500=(m_π²+p²) should be introduced. A further calculation including the p-dependent bare T-matrix, a more realistic NN potential and the contribution from the higher-order wave functions would provide a better understanding of the decay data and even the existence of the baryonium pp. The near pp-threshold behavior of the decay width in the J=/ψ→π⁰pp process is also discussed.

References

[1]

BAI J Z et al.(BES collaboration). Phys. Rev. Lett, 2003,91: 0220012 Ablikim M et al. (BES0 collaboration). Chin. Phys. C (HEP NP), 2010, 34: 4213 Abe K et al. (Belle collaboration). Phys. Rev. Lett, 2002,88: 1818034 Abe K et al. (Belle collaboration). Phys. Rev. Lett, 2002,89: 1518025 Datta A, J O'Donnell P. Phys. Lett. B, 2003, 567: 2736 Loiseau B, Wycech S. Phys. Rev. C, 2005, 72: 0110017 Kerbikov B, Stavinsky A, Fedotov V. Phys. Rev. C, 2004,69: 0552058 Bugg D V. Phys. Lett. B, 2004, 598: 89 ZOU B S, Chiang H C. Phys. Rev. D, 2004, 69: 03400410 Sibirtsev A, Haidenbauer J, Krewald S et al. Phys. Rev. D,2005, 71: 05401011 Haidenbauer J, Meiβner Ulf-G, Sibirtsev A. Phys. Rev. D,2006, 74: 01750112 Taylor J R. Scattering Theory: The Quantum Theory on Nonrelativistic Collisions. John Wiley and Sons, Inc.13 Watson K M. Phys. Rev, 1952, 88: 116314 Migdal A B. Sov. Phys. JETP, 1955, 1: 2

[1]	LI De-Min , . Near-threshold η production in pp collisions. Chinese Physics C, 2015, 39(11): 113104. doi: 10.1088/1674-1137/39/11/113104
[2]	WANG Bo-Qun , MO Xiao-Hu , WANG Ping , BAN Yong . Fast computation of observed cross section for ψ'→PP decays. Chinese Physics C, 2011, 35(5): 411-418. doi: 10.1088/1674-1137/35/5/001
[3]	HAN Yun-Cheng , Nobuyuki Chiga , Yu Fujii , Kenta Futatsukawa , Osamu Hashimoto , Kentaro Hirose , Takatsugu Ishikawa , Hiroki Kanda , Masashi Kaneta , Daisuke Kawama , Yue Ma , Kazushige Maeda , Tomofumi Maruta , Nayuta Maruyama , Akihiko Matsumura , Youhei Miyagi , Koji Miwa , Satoshi N , Hajime Shimizu , Koutarou Shirotori , Koutaku Suzuki , Tadaaki Tamae , Hirokazu Tamura , Kyo Tsukada , WANG Tie-Shan , Hirohito Yamazaki . Energy calibration of tagged photons by the d(γ, π^－pp) reaction. Chinese Physics C, 2010, 34(1): 35-38. doi: 10.1088/1674-1137/34/1/006
[4]	M. Ablikim (BESⅢ collaboration) . Observation of a pp mass threshold enhancement in ψ′→π⁺π^－J/ψ(J/ψ→γpp) decay. Chinese Physics C, 2010, 34(4): 421-426. doi: 10.1088/1674-1137/34/4/001
[5]	P. G. Ortega , D. R. Entem , F. Fernandez . ΛΛ production in pp collisions. Chinese Physics C, 2010, 34(9): 1462-1464. doi: 10.1088/1674-1137/34/9/072
[6]	YANG Hong-Xun (for the BESⅡ collaboration) . Partial wave analysis of J/ψ→ppπ⁰ and measurement of J/ψ→ppη, ppη´. Chinese Physics C, 2009, 33(12): 1331-1335. doi: 10.1088/1674-1137/33/12/048
[7]	GUO Yu-Ping , PING Rong-Gang , XIAO Zhen-Jun . Study of ππ final state interactions in ψ(2S)→π⁺π^－ J/ψ. Chinese Physics C, 2009, 33(4): 245-248. doi: 10.1088/1674-1137/33/4/001
[8]	CAO Xu . N^*(1535) contribution in pp→ppη´ and pn→dφ. Chinese Physics C, 2009, 33(12): 1381-1384. doi: 10.1088/1674-1137/33/12/060
[9]	ZOU Bing-Song . Complementary studies on N^* from e⁺e^－, pp and pp collisions. Chinese Physics C, 2009, 33(12): 1113-1119. doi: 10.1088/1674-1137/33/12/011
[10]	WANG Mei-Juan , LIU Lian-Shou , WU Yuan-Fang . Trace initial interaction from final state observable in relativistic heavy ion collisions. Chinese Physics C, 2009, 33(1): 36-41. doi: 10.1088/1674-1137/33/1/008
[11]	JIAO Jian-Bin , ZHU Yong-Sheng , ZHANG Xue-Yao . Efficiency Correction in the Measurement of ψ′→pp Angular Distribution. Chinese Physics C, 2006, 30(10): 931-935.
[12]	LIU Xiang , ZENG Xiao-Qiang , DING Yi-Bing , LI Xue-Qian , SHENG Hong , SHEN Peng-Nian . The Linearσ-model and the Observed Enhancement in the Mass Spectrum of pp in J/ψ→γpp. Chinese Physics C, 2006, 30(1): 1-12.
[13]	JIA Yong , DU Lin-Lin , ZHANG Yan-Ming , GAO Guang-Ping . SUSY QCD Residual Effects in pp→bbh Process. Chinese Physics C, 2006, 30(6): 507-512.
[14]	ZENG Zhuo-Quan , SHEN Peng-Nian , DING Yi-Bing , JIAN Huan-Qing , LI Xue-Qian , LU Xiao . Paris NN Potential and the Possible Resonance States of pp. Chinese Physics C, 2005, 29(6): 537-542.
[15]	Medina Ablikim , DU Dong-Sheng , YANG Mao-Zhi . Final State Interactions in D→PP Decays. Chinese Physics C, 2003, 27(9): 759-766.
[16]	YE ShuWei , ZHAO JiaWei , CHEN HongFang , ZHANG ZiPing . Event Generator for ψ′Decays of VP and PP Modes. Chinese Physics C, 2000, 24(3): 185-189.
[17]	Yang Yi , Yu Jianzhong , Zou Yongqing , Su Junchen . Gluon Exchange Potential and Cross-Section for pp→ΛΛ Proce. Chinese Physics C, 1994, 18(1): 85-90.
[18]	Zhang Yang , Liu Lianshou . The Clustered Production of Final Particles and ForwardBackward Correlation in High Energy pp Collision. Chinese Physics C, 1994, 18(4): 326-333.
[19]	Zhang Yang , Liu Lianshou . The Forward-Backward Correlation and Clustered Production of Final-State Particles in High Energy pp Collision. Chinese Physics C, 1994, 18(Z1): 69-78.
[20]	LI Yang-Guo . COMPLEX AMPLITUDE OF GEOMETRICAL MODEL AND pp SCATTERING. Chinese Physics C, 1985, 9(1): 125-128.

Access

Get Citation

ZENG Zhuo-Quan, GUO Xin-Heng, SHEN Peng-Nian and DING Yi-Bing. pp final state interaction in J=/ψ→γpp[J]. Chinese Physics C, 2012, 36(5): 399-402. doi: 10.1088/1674-1137/36/5/004

ZENG Zhuo-Quan, GUO Xin-Heng, SHEN Peng-Nian and DING Yi-Bing. pp final state interaction in J=/ψ→γpp[J]. Chinese Physics C, 2012, 36(5): 399-402. doi: 10.1088/1674-1137/36/5/004 shu

RIS(for EndNote,Reference Manager,ProCite)

BibTex

Txt

Milestone

Received: 2011-09-09
Revised: 2011-10-31

Article Metric

Article Views(1468)
PDF Downloads(277)
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

pp final state interaction in J=/ψ→γpp

Received Date: 2011-09-09

Accepted Date: 2011-10-31

Available Online: 2012-05-05

Abstract: The phenomenon of the near pp-threshold enhancement observed in the J=/ψ→γpp decay is studied by using the enhancement factor method with a simpler one-pion-exchange potential between p and p. The Jost function caused by the mentioned potential is perturbatively calculated in the zero-th order approximation, and the corresponding enhancement factor is obtained. It is found that such a final state interaction offers an important contribution to the decay width near the pp-threshold, although it is not large enough. To explain the decay data, a phenomenological factor G(p) with the form of 285500=(m_π²+p²) should be introduced. A further calculation including the p-dependent bare T-matrix, a more realistic NN potential and the contribution from the higher-order wave functions would provide a better understanding of the decay data and even the existence of the baryonium pp. The near pp-threshold behavior of the decay width in the J=/ψ→π⁰pp process is also discussed.

HTML

Reference (1)

pp final state interaction in J=/ψ→γpp

Abstract：

References

Access

Article Metrics

Metrics

通讯作者: 陈斌, bchen63@163.com

Email This Article

pp final state interaction in J=/ψ→γpp

HTML

目录