Study of Medium Modifications on △ Production Cross Sections of both Hard and Soft Processes from the Isospin Asymmetric Nuclear System

LI Qingfeng; LI Zhuxia

doi:10.11804/NuclPhysRev.35.04.374

Within the framework of the relativistic BUU approach, we investigate the effect of energy-, density-, and especially isospin-dependent medium modifications on △ production cross sections of both hard (NN → N△) and soft (Nπ → △) processes as well as its decay width. It is found that, similar to the nucleon-nucleon elastic scattering, the △ production cross section from the hard process is strongly dependent on both density and the mass splitting effect in the isospin asymmetric matter. While the dependence is relative weak from the soft one, and so is the △ decay width. Further, in the hard (soft) process, the splitting effect is largest (smallest) and of opposite sign for the △⁺⁺ and △^- states.

Study of Medium Modifications on △ Production Cross Sections of both Hard and Soft Processes from the Isospin Asymmetric Nuclear System

1. School of Science, Huzhou University, Huzhou 313000, Zhejiang, China;

2. Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, China;

3. China Institute of Atomic Energy, Beijing 102413, China

Funds: National Natural Science Foundation of China(11847315, 11875125, 11475262, 11790320)

Received Date: 2018-09-19

Rev Recd Date: 2018-12-04

Publish Date: 2020-05-03

Key words:

Abstract: Within the framework of the relativistic BUU approach, we investigate the effect of energy-, density-, and especially isospin-dependent medium modifications on △ production cross sections of both hard (NN → N△) and soft (Nπ → △) processes as well as its decay width. It is found that, similar to the nucleon-nucleon elastic scattering, the △ production cross section from the hard process is strongly dependent on both density and the mass splitting effect in the isospin asymmetric matter. While the dependence is relative weak from the soft one, and so is the △ decay width. Further, in the hard (soft) process, the splitting effect is largest (smallest) and of opposite sign for the △⁺⁺ and △^- states.

HTML

Reference (23)

[1]	BALDO M, BURGIO G F. Prog Part Nucl Phys, 2016, 91:203.
[2]	MAO G. Relativistic Microscopic Quantum Transport Equation[M]. New York:NOVA Science Publishers, 2005.
[3]	VAN DALEN E N E, FUCHS C, FAESSLER A. Phys Rev Lett, 2005, 95:022302.
[4]	XIAO Z, LI B A, CHEN L W, et al. Phys Rev Lett, 2009, 102:062502.
[5]	FENG Z Q, JIN G. M. Phys Lett B, 2010, 683:140.
[6]	XU J, CHEN L W, TSANG M B, et al. Phys Rev C, 2016, 93:044609.
[7]	ZHANG Y X, WANG Y J, COLÒNNA M, et al. Phys Rev C, 2018, 97:034625.
[8]	LI Zhuxia. Nuclear Physics Review, 2014, 31(3):285. (in Chinese) (李祝霞. 原子核物理评论, 2014, 31(3):285.)
[9]	SONG T, KO C M. Phys Rev C, 2015, 91:014901.
[10]	ZHANG Z, KO C M. Phys Rev C, 2017, 95:064604.
[11]	PRASSA V, FERINI G, GAITANOS T, et al. Nucl Phys A, 2007, 789:311.
[12]	BASS S A, BELKACEM M, BLEICHER M, et al. Prog Part Nucl Phys, 1998, 41:255.
[13]	MAO G, LI Z, ZHUO Y, et al. Phys Rev C, 1994, 49:3137.
[14]	MAO G J, NEISE L, STOECKER H, et al. Phys Rev C, 1999, 59:1674.
[15]	LI Q F, LI Z X, ZHAO E G. Phys Rev C, 2004, 69:017601.
[16]	LI Q, LI Z. Phys Lett B, 2017, 773:557.
[17]	FUCHS C, LENSKE H, WOLTER H H. Phys Rev C, 1995, 52:3043.
[18]	HOFMANN F, KEIL C M, LENSKE H. Phys Rev C, 2001, 64:034314.
[19]	LI Q F, LI Z X, SOFF S M, et al. J Phys G, 2006, 32:151.
[20]	TER HAAR B, MALFLIET R. Phys Rept, 1987, 149:207.
[21]	MAO G J, LI Z X, ZHUO Y Z, et al. Phys Lett B, 1994, 327:183.
[22]	SHIMIZU F, KUBOTA Y, KOISOH, et al. Nucl Phys A, 1982, 386:571.
[23]	TER HAAR B, MALFLIET R. Phys Rev C, 1987, 36:1611.

Study of Medium Modifications on △ Production Cross Sections of both Hard and Soft Processes from the Isospin Asymmetric Nuclear System

doi: 10.11804/NuclPhysRev.35.04.374

Abstract

References

Proportional views

通讯作者: 陈斌, bchen63@163.com

Article Metrics

Proportional views