Monte Carlo Study of N<SUP>*</SUP>(1440) Excitation in p (α,α′)πN Reactions

CHEN Hong; YUAN Hong-Kuan

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《中国物理C》（英文）编辑部

2024年10月30日

Chinese Physics C> 2004, Vol. 28> Issue(S1) : 113-115

Monte Carlo Study of N^*(1440) Excitation in p (α,α′)πN Reactions

CHEN Hong ^, ,
YUAN Hong-Kuan

School of Physics, Southwest China Normal University, Chongqing 400715, China2 Center of Theoretical Nuclear Physics, National Laboratory of Heavy Ion Accelerator, Lanzhou 730000, China

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Abstract：
We study the roper N^*(1440) excitation in the p(α,α′)πN reaction and reproduce the peak position of N^*(1440) resonance in the target by using Monte Carlo simulation approach. Given a definite beam energy we could simulate the momentum distributions and angular distributions of final particles. One can observe the N^*(1440) resonance peak obviously in the invariant mass spectrum, also, the event distribution is dense at 2100MeV² of πN system energy square in Dalitz plots. But there are no such phenomenon in other composed systems. All of those things indicate that N^*(1440) is produced.

References

[1]

. Pena M T, Riska D O, Stadler A. Phys. Rev., 1999, C60:0452012.Coon S A, Pena M T, Riska D O. Phys. Rev., 1995, C52:29253.Morsch H P, Boibin M, Jacobs W et al. Phys. Rev. Lett.,1992, 69: 13364.Fernandez de Cordoba P, Oset E, Jvicente-Vacas M et al. Nucl. Phys., 1995, A586: 5865.Hirenzaki S, Fernandez de Cordoba P, Oset E. Phy. Rev.,1996, C53: 2776.Gomez Tejedor J A, Oset E. Nucl. Phys., 1994, A571:6677.Machleidt R, Holinde K, Elster C. Phys. Rep., 1987, 149:1

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CHEN Hong and YUAN Hong-Kuan. Monte Carlo Study of N^*(1440) Excitation in p (α,α′)πN Reactions[J]. Chinese Physics C, 2004, 28(S1): 113-115.

CHEN Hong and YUAN Hong-Kuan. Monte Carlo Study of N^*(1440) Excitation in p (α,α′)πN Reactions[J]. Chinese Physics C, 2004, 28(S1): 113-115. shu

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Received: 2004-12-30
Revised: 1900-01-01

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沈阳化工大学材料科学与工程学院沈阳 110142

Monte Carlo Study of N^*(1440) Excitation in p (α,α′)πN Reactions

CHEN Hong ^,
YUAN Hong-Kuan

Corresponding author: CHEN Hong,

School of Physics, Southwest China Normal University, Chongqing 400715, China2 Center of Theoretical Nuclear Physics, National Laboratory of Heavy Ion Accelerator, Lanzhou 730000, China

Received Date: 2004-12-30
Accepted Date: 1900-01-01
Available Online: 2004-04-02

Abstract: We study the roper N^*(1440) excitation in the p(α,α′)πN reaction and reproduce the peak position of N^*(1440) resonance in the target by using Monte Carlo simulation approach. Given a definite beam energy we could simulate the momentum distributions and angular distributions of final particles. One can observe the N^*(1440) resonance peak obviously in the invariant mass spectrum, also, the event distribution is dense at 2100MeV² of πN system energy square in Dalitz plots. But there are no such phenomenon in other composed systems. All of those things indicate that N^*(1440) is produced.