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

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

    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

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.

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