Chinese Physics C > 2006, Vol. 30 > Issue(9): 819-823

Efficiency Correction to HOWL Generator of J/ψ→ Baryon Antibaryon Decays

PING Rong-Gang^,,
LI Hai-Bo

CCASTWorld Lab., Beijing 100080, ChinaInstitute of High Energy Physics, Chinese Academy of Sciences, Beijing 100049, China

Abstract
HTML
Reference
Related

PDF

Abstract：
A kind of Monte-Carlo generator based on the transition amplitude information is developed to study the detection efficiency correction to the pure phase space(HOWL) generator. Monte-Carlo(MC) simulations for the J/ψ→pp, ΛΛ, pX decays are carried out, and the results show that angular distributions for the decayed particles can well be reproduced. Compared with the HOWL generator, we find that the generator based on amplitude information will make a large correction to the detection efficiency. Therefore we recommend that a generator with a full transition information be used to simulate the long sequential decays.

References

[1]

. PING Rong-Gang, DU Shu-Xian. Chin. Phys. Lett., 2005,22: 13092. BAI J Z, BAN Y, BIAN J G et al. Phys. Lett., 2004, B549:473. Commins E D, Buchsbaus P H. Weak Interactions of Lep-tons and Quarks. Cambridge: Cambridge University Press,19834. ZOU B S, Hussain F. Phys. Rev., 2003, C67: 0152045. Particle Data Group. Phys. Lett., 2004, B592: 8646. Ablikim M, BAI J Z, BAN Y et al. arXiv:hep-ex/05060207. Ablikim M, BAI J Z, BAN Y et al. Phys. Rev. Lett., 2004,93: 1120028. Ablikim M, BAI J Z, BAN Y et al. arXiv:physics/05030019. Cronin J M, Oversetii O E. Phys. Rev., 1963, 129: 179510. Tornquist N A. Phys. Lett., 1986, A117: 111. Tixier M H, Ajaltouni Z, Falvard A et al. Phys. Lett., 1988,B212: 523

[1]	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.
[2]	PING Rong-Gang,YUAN Chang-Zheng. Baryon Resonance in χ_c0→BBMM Decays. Chinese Physics C, 2006, 30(8): 731-735.
[3]	LIU Xi-Ming. Anti-particles-to-Particles Ratios in Au+Au Collisions at √S_NN=130GeV. Chinese Physics C, 2006, 30(5): 435-440.
[4]	YU Guo-Wei,FANG Shuang-Shi,LI Wei-Guo,WU Ning. SU(3) Flavor Symmetry Breaking in J/ψ →baryon-antibaryon. Chinese Physics C, 2006, 30(7): 599-602.
[5]	PING Rong-Gang,ZOU Bing-Song. A Study of the Charm-Baryonic Structure from ㄚ Decays. Chinese Physics C, 2005, 29(4): 361-365.
[6]	WANG Wen-Feng,ZHU Yong-Sheng,ZHANG Xue-Yao. Efficiency Correction in the Branching Fraction Determination of ψ′Hadronic Decays. Chinese Physics C, 2003, 27(2): 89-94.
[7]	ZHANG Zong-Ye,YU You-Wen. An Analysis of Quark Effect in Two Baryon System. Chinese Physics C, 2002, 26(7): 712-720.
[8]	SHAO Feng-Lan,XIE Qu-Bing. Ratio of Baryon to Meson and Baryon Antibaryon Correlation in e⁺e^－Annihilation under Two Kinds of Color Connections. Chinese Physics C, 2002, 26(8): 779-785.
[9]	LI QiangBing,SHEN PengNian. Is Any s=－3 Dibaryon Possible?. Chinese Physics C, 2000, 24(9): 880-884.
[10]	Sa Benhao,Tai An. Reduction of Strangeness Suppression and Strange Antibaryon Production in Sulphur-Nucleus Collisions at 200A GeV. Chinese Physics C, 1998, 22(1): 41-47.
[11]	Zhang Lin,Yu Hong,Shen Qixing. Angular Distributions for the Process e⁺e^－→J/ψ→γ+X(J^PC),X→BB and Spin-Parity Analysis of the Resonance X. Chinese Physics C, 1996, 20(3): 280-285.
[12]	Hou Yunzhi. Symmetry for Semileptonic Decays of B-Baryons. Chinese Physics C, 1994, 18(9): 836-841.
[13]	HOU Yunzhi,GAO Lixin. SU(3)_fPredictions for Nonleptonic Decays of Charmless B-Flavoured Baryons. Chinese Physics C, 1993, 17(12): 1091-1101.
[14]	XIE Qu-Bing. The Origin and Universality of Spin Suppression in Baryon Production. Chinese Physics C, 1992, 16(1): 22-28.
[15]	DU Dong-Sheng,XING Zhi-Zhong. CP-Violating Effects in Two-Body Baryonic Decays of B⁰－B⁰System. Chinese Physics C, 1992, 16(5): 398-407.
[16]	CHEN E-Sheng,XIE Qu-Bing. THE RATIO OF CHARMED BARYON TO MESON IN e⁺e^－ANNIHILATION. Chinese Physics C, 1990, 14(4): 319-324.
[17]	ZENG Xin-Chuan,HU Shi-Ke. THE STUDY OF BARYON STRUCTURE IN THE SKYRME MODEL. Chinese Physics C, 1987, 11(4): 469-475.
[18]	WANG Wei-Wei,ZHANG Yu-Shun,LI YANG,RUAN Tu-Nan. UNITARY THEORY OF BARYON-SYSTEM. Chinese Physics C, 1983, 7(1): 57-66.
[19]	WANG WEI-WEI,ZHANG YU-SHUN,LI YANG-GUO,CHEN XIAO-TIAN,RUAN TU-NAN. THE “UNIRARY ENERGY BAND” STRUCTURE IN THE BARYON-ANTIBARYON SYSTEN. Chinese Physics C, 1981, 5(4): 441-451.
[20]	Chen Xiao-tian,Yuan Tu-nan,Zhang Yu-shun,Li Yang-guo. UNITARY SYMMETRY IN BARYON-ANTIBARYON SYSTEMS. Chinese Physics C, 1980, 4(4): 445-454.

Access

Get Citation

PING Rong-Gang and LI Hai-Bo. Efficiency Correction to HOWL Generator of J/ψ→ Baryon Antibaryon Decays[J]. Chinese Physics C, 2006, 30(9): 819-823.

PING Rong-Gang and LI Hai-Bo. Efficiency Correction to HOWL Generator of J/ψ→ Baryon Antibaryon Decays[J]. Chinese Physics C, 2006, 30(9): 819-823. shu

RIS(for EndNote,Reference Manager,ProCite)

BibTex

Txt

Milestone

Received: 2006-02-05
Revised: 2006-04-11

Article Metric

Article Views(5766)
PDF Downloads(787)
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

Efficiency Correction to HOWL Generator of J/ψ→ Baryon Antibaryon Decays

PING Rong-Gang^,
LI Hai-Bo

Corresponding author:PING Rong-Gang,

CCASTWorld Lab., Beijing 100080, ChinaInstitute of High Energy Physics, Chinese Academy of Sciences, Beijing 100049, China

Received Date:2006-02-05
Accepted Date:2006-04-11
Available Online:2006-09-05

Abstract:A kind of Monte-Carlo generator based on the transition amplitude information is developed to study the detection efficiency correction to the pure phase space(HOWL) generator. Monte-Carlo(MC) simulations for the J/ψ→pp, ΛΛ, pX decays are carried out, and the results show that angular distributions for the decayed particles can well be reproduced. Compared with the HOWL generator, we find that the generator based on amplitude information will make a large correction to the detection efficiency. Therefore we recommend that a generator with a full transition information be used to simulate the long sequential decays.