PROTON-NUCLEUS SCATTERING IN A THERMODYNAMICAL FIREBALL MODEL

WU JING-YUAN; XIE YI-CHENG

Chinese Physics C> 1981, Vol. 5> Issue(1) : 29-38

PROTON-NUCLEUS SCATTERING IN A THERMODYNAMICAL FIREBALL MODEL

Abstract
HTML
Reference
Related

PDF

Abstract：
We attempt use a simple fireball model to explain the slow rise of the ratio R_A≡〈N_A〉/〈N_N〉 of the charged multiplicity for proton-nucleus scattering to that for proton-proton scattering verses the apparent nuclear thickness v. The pseudo-rapidity distribution dN_A/d_η is also discussed. In this model, the pi mesons are emitted by fireballs created during nucleon-nucleon scattering. When the incident energy E_lab Z 50 GeV/c², these fire-balls take so long a time to expend to thermal equilibrium that the fireballs have passed through the nucleus completely before pions are emitted. As a result, the charged multiplicity is greatly reduced.This model gives excellent fittings to pp charged mutiplicity, R_A verses v as well as R_emalsion verses E_lab without any free theoretical parameter. By choosing only one parameter for the equilibrium of angular momentum, dN_A/d_η can be fitted satisfactorily except for the large pseudo-rapidity region.

References

[1]

W. Busza, in High Energy Physics and Nuclear B'Eructure, 1975, Proc. of the 6th Inter. Conf Santa Fo and Los Alemns. edited by D. E. Nacle et al..(AIP. New York, 1975) .[2] W. Busza et al.. In Proc. of the XVIII Intor. Conf. on Hing Energy Physics. Tbilisi. 1976 edited by N. N. Bogaliubow et al (JINR, Dnbna, U. S. S. R., 1977).[3] E.Fermi, Prog. Thaor. Phys., 5(1950), 570.[4] E.Feitni. Phys. Rev., 81(1951). 683.[5] T.C. Mangy, Phys. Rev., D9(1974), 3062.[6] M. E. Law et al., Lawroneo Berkeley Laboratory No. LBL-80, 1972 (unpublished).[7] G. Bialkowski, C. B. Chiw and D. M. Tow, Phys. Rev., D17(1978), 862.[8] K. Gott.friod, Phys. Rev. Lett., 32(1974), 957.

[1]	ZHANG Jun-Shun , ZHANG Rui-Ping , LUO Yan-An , PAN Feng . SD Pair Shell Model: Influence of Pair Structure on the Collectivity of Low-lying States. Chinese Physics C, 2006, 30(8): 755-758.
[2]	HOU Zhan-Feng , ZHANG Yu , LIU Yu-Xin . Nuclear Shape Phase Transition in the Shell Model. Chinese Physics C, 2006, 30(S2): 48-52.
[3]	Bao Tmurbagan , LIU Guang-Zhou , ZHU Ming-Feng . Mass-Density-Dependent Quark Model with Thermodynamic Self-consistency and Hybrid Stars. Chinese Physics C, 2006, 30(S2): 255-257.
[4]	LIU Jian-Ye , GUO Wen-Jun , ZHAO Qiang , YANG Yan-Fang , ZUO Wei . Nuclear Stopping as a Probe to Nucleon-Nucleon Cross Section in Heavy Ion Collisions. Chinese Physics C, 2001, 25(4): 336-342.
[5]	Chen Xiangjun , Zhang Weining , Huo Lei . Two-Loop Correction of Thermodynamic Potential of QCD at Finite Temperature. Chinese Physics C, 1999, 23(11): 1083-1089.
[6]	Wang Xin , Li Jiarong . Two-Loop Thermodyn amic Potential of Pure Gauge Fields in QGP. Chinese Physics C, 1998, 22(7): 614-625.
[7]	Zhang Fengshou . Energetic Protons and Cold Nuclear Multifragmentation Pattern. Chinese Physics C, 1997, 21(6): 523-529.
[8]	Zheng Chunkai , Hu Jimin , Xu Furong . Studies of Nuclei Far From the Stability Line With Macro-Microscopic Model. Chinese Physics C, 1996, 20(4): 317-323.
[9]	Lu Zhaoqi , Li Zhuxia . A Study of Reaction Mechanism in Intermediate Energy Proton-Nucleus Collisions. Chinese Physics C, 1994, 18(7): 647-651.
[10]	LI Yang-Guo . Antiproton-Nucleus Elastic Scattering at Intermediate Energies. Chinese Physics C, 1993, 17(9): 829-834.
[11]	JIANG De-Bao , HE Ze-Jun . Evolution of Strangeness in an Expanding Quark-Gluon Plasma Formed by Ultrarelativistic Nucleus-Collisions. Chinese Physics C, 1991, 15(5): 450-456.
[12]	ZHANG Jing-Ye . THE DYNAMIC EFFECT ON NUCLEAR DEFORMATION I.DEFORMATIONS AT HIGH SPINS FOR NUCLEUS ¹⁷²Os. Chinese Physics C, 1990, 14(6): 573-576.
[13]	HOU Yun-Zhi , WANG Yi-Li , HE Zhen-Min . EMC EFFECT ON P-A HIGH ENERGY COLLISION. Chinese Physics C, 1990, 14(6): 515-518.
[14]	LI Yang-Guo . ANTIPROTON-NUCLEUS INELASTIC COLLISION. Chinese Physics C, 1989, 13(5): 433-439.
[15]	WANG Qin-Mou . THERMODYNAMICAL PROPERTIES OF GAUGE THEORIES AT FINITE TEMPERATURE AND CHEMICAL POTENTIAL. Chinese Physics C, 1986, 10(1): 24-31.
[16]	WANG CHENG-SHING . QUASI-THERMODYNAMIC THEORY ON FISSION CHARGE DISTRIBUTION. Chinese Physics C, 1982, 6(4): 466-471.
[17]	HU JI-MIN . A CONTINUOUS MEDIUM MODEL OF ATOMIC NUCLEI. Chinese Physics C, 1981, 5(2): 244-254.
[18]	Ma Wei-xing , Lin Chun-can . ELASTIC SCATTERING OF HADRONS FROM NUCLEI AT HIGH ENERGY AND THE SHORT RANGE CORRELATION IN NUCLEI. Chinese Physics C, 1980, 4(3): 302-312.
[19]	LIU XIAN-HUI , ZHANG YU-SHUN , LI YANG-GUO . EFFECT OF N PRODUCTION ON HIGH ENERGY PROTON SCATTERING BY NUCLEUS. Chinese Physics C, 1979, 3(4): 484-493.
[20]	LI YANG-GUO , ZHANG YU-SHUN , LIN CHUN-CAN . SPIN EFFECTS IN HIGH-ENERGY NUCLEONNUCLEUS SCATTERING. Chinese Physics C, 1978, 2(6): 526-533.

Access

Get Citation

WU JING-YUAN and XIE YI-CHENG. PROTON-NUCLEUS SCATTERING IN A THERMODYNAMICAL FIREBALL MODEL[J]. Chinese Physics C, 1981, 5(1): 29-38.

WU JING-YUAN and XIE YI-CHENG. PROTON-NUCLEUS SCATTERING IN A THERMODYNAMICAL FIREBALL MODEL[J]. Chinese Physics C, 1981, 5(1): 29-38. shu

RIS(for EndNote,Reference Manager,ProCite)

BibTex

Txt

Milestone

Received: 1979-08-29
Revised: 1900-01-01

Article Metric

Article Views(2131)
PDF Downloads(248)
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

PROTON-NUCLEUS SCATTERING IN A THERMODYNAMICAL FIREBALL MODEL

WU JING-YUAN
XIE YI-CHENG

Received Date: 1979-08-29
Accepted Date: 1900-01-01
Available Online: 1981-05-05

Abstract: We attempt use a simple fireball model to explain the slow rise of the ratio R_A≡〈N_A〉/〈N_N〉 of the charged multiplicity for proton-nucleus scattering to that for proton-proton scattering verses the apparent nuclear thickness v. The pseudo-rapidity distribution dN_A/d_η is also discussed. In this model, the pi mesons are emitted by fireballs created during nucleon-nucleon scattering. When the incident energy E_lab Z 50 GeV/c², these fire-balls take so long a time to expend to thermal equilibrium that the fireballs have passed through the nucleus completely before pions are emitted. As a result, the charged multiplicity is greatly reduced.This model gives excellent fittings to pp charged mutiplicity, R_A verses v as well as R_emalsion verses E_lab without any free theoretical parameter. By choosing only one parameter for the equilibrium of angular momentum, dN_A/d_η can be fitted satisfactorily except for the large pseudo-rapidity region.