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Angular Distributions for Heavy Quarkonium Decays into Baryon--Antibaryon Pairs |
| PANG Cai-Ying 1,2;PING Rong-Gang1 |
| 1Institute of High Energy Physics, Chinese Academy of Sciences, PO BOX 918(1), Beijing 1000492College of Physics and Electronic Engineering, Guangxi Normal University, Guilin 541004 |
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| Cite this article: |
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PANG Cai-Ying, PING Rong-Gang 2007 Chin. Phys. Lett. 24 1441-1443 |
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Abstract Based on the naive quark model, we calculate angular distributions for heavy quarkonium decays into pN*(1440), decuplet baryon pairs, and octet--decuplet baryon pairs. The general formulae of angular distributions are given explicitly. Quark mass effects on the violation of the helicity conservation and the prospect to look for them in J/ψ hadronic decays are discussed.
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| Keywords:
02.70.Uu
13.20.Gd
14.20.Gk
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Received: 19 December 2006
Published: 17 May 2007
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| PACS: |
02.70.Uu
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(Applications of Monte Carlo methods)
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13.20.Gd
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(Decays of J/ψ, Υ, and other quarkonia)
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14.20.Gk
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(Baryon resonances (S=C=B=0))
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[1] Bai J Z et al (BES Collaboration) 2004 Phys. Lett. B 591 42
[2] Ablikim M et al (BES Collaboration) 2004 Phys. Lett. B 632 181
[3] Eaton M W et al 1984 Phys. Rev. D 29 804
[4] Ablikim M et al (BES Collaboration) 2006 hep-ex/0610079v2
[5] Brodsky S J and Lepage G P 1981 Phys. Rev. D 24 2848
[6] Carimalo C 1987 Int. J. Mod. Phys. A 2 249
[7]Ping R G, Chiang H C and Zou B S 2002 Phys. Rev. D 66 054020 Chen H and Ping R G 2007 Phys. Lett. B 644 54
[8] Claudson M, Glashow S L and Wise M B 1982 Phys. Rev. D 25 1345
[9] Chernyak V L and Zhitnitsky I R 1984 Nucl. Phys. B 246 52
[10]Chen H and Ping R G 2006 Phys. Lett. B 10 1016
[11]Ping R G, Chiang H C and Zou B S 2002 Phys. Rev. D 66 054020
[12]Zou B S, Peng G X, Ping R G et al 2001 Eur. Phy. J. A 11 341
[13]Korner J G 1987 Z. Physik C: Particles andFields 33 529
[14]Mao W M, Amsler C, Asner D et al 2006 J. Phys. G 33 1
[15]Genz H, Malvetti M and Tatur S 1985 Phys. Rev. D 31 1751
[16] Korner J G 1987 Z. Phys. C 33 529
[17]Ping R G, Chiang H Q and Zou B S 2004 Nucl. Phys. A 743 149
[18]This value is estimated using the experimentalinformation of $J/\psi\to \Sigma^{*- \bar \Sigma^{*+$ by DM2collaboration, see Henrard P et al 1987 Nucl. Phys. B 292 670 [1] Bai J Z et al (BES Collaboration) 2004 Phys. Lett. B 591 42
[2] Ablikim M et al (BES Collaboration) 2004 Phys. Lett. B 632 181
[3] Eaton M W et al 1984 Phys. Rev. D 29 804
[4] Ablikim M et al (BES Collaboration) 2006 hep-ex/0610079v2
[5] Brodsky S J and Lepage G P 1981 Phys. Rev. D 24 2848
[6] Carimalo C 1987 Int. J. Mod. Phys. A 2 249
[7]Ping R G, Chiang H C and Zou B S 2002 Phys. Rev. D 66 054020 Chen H and Ping R G 2007 Phys. Lett. B 644 54
[8] Claudson M, Glashow S L and Wise M B 1982 Phys. Rev. D 25 1345
[9] Chernyak V L and Zhitnitsky I R 1984 Nucl. Phys. B 246 52
[10]Chen H and Ping R G 2006 Phys. Lett. B 10 1016
[11]Ping R G, Chiang H C and Zou B S 2002 Phys. Rev. D 66 054020
[12]Zou B S, Peng G X, Ping R G et al 2001 Eur. Phy. J. A 11 341
[13]Korner J G 1987 Z. Physik C: Particles andFields 33 529
[14]Mao W M, Amsler C, Asner D et al 2006 J. Phys. G 33 1
[15]Genz H, Malvetti M and Tatur S 1985 Phys. Rev. D 31 1751
[16] Korner J G 1987 Z. Phys. C 33 529
[17]Ping R G, Chiang H Q and Zou B S 2004 Nucl. Phys. A 743 149
[18]This value is estimated using the experimentalinformation of $J/\psi\to \Sigma^{*- \bar \Sigma^{*+$ by DM2collaboration, see Henrard P et al 1987 Nucl. Phys. B 292 670 |
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