S-wave π0 production in pp collisions in a OBE model

E. Gedalin; A. Moalem; L. Rasdolskaya

doi:10.1016/S0375-9474(99)00140-2

S-wave π⁰ production in pp collisions in a OBE model

E. Gedalin, A. Moalem, L. Rasdolskaya

Department of Physics

Research output: Contribution to journal › Article › peer-review

3 Scopus citations

Abstract

The total cross section for the pp → ppπ⁰ reaction at energies close to threshold is calculated using a covariant one-boson-exchange model, where a boson B created on one of the incoming protons is converted into a neutral pion on the second. The amplitudes for the conversion processes, BN → Nπ⁰, are taken to be the sum of s, u and t-channel pole terms. The main contributions to the primary production amplitude is due to an effective isoscalar σ meson pole in a t-channel, which is enhanced strongly due to offshellness. With this contribution included the model reproduces, both the scale and energy dependence of the cross section.

Original language	English
Pages (from-to)	287-307
Number of pages	21
Journal	Nuclear Physics A
Volume	652
Issue number	3
DOIs	https://doi.org/10.1016/S0375-9474(99)00140-2
State	Published - 1 Jan 1999

Keywords

Covariant OBE model
Effective two-pion exchanges
π production

ASJC Scopus subject areas

Nuclear and High Energy Physics

Access to Document

10.1016/S0375-9474(99)00140-2

Cite this

@article{e20db0753857409fb1cd5c7d9ddc8fef,

title = "S-wave π0 production in pp collisions in a OBE model",

abstract = "The total cross section for the pp → ppπ0 reaction at energies close to threshold is calculated using a covariant one-boson-exchange model, where a boson B created on one of the incoming protons is converted into a neutral pion on the second. The amplitudes for the conversion processes, BN → Nπ0, are taken to be the sum of s, u and t-channel pole terms. The main contributions to the primary production amplitude is due to an effective isoscalar σ meson pole in a t-channel, which is enhanced strongly due to offshellness. With this contribution included the model reproduces, both the scale and energy dependence of the cross section.",

keywords = "Covariant OBE model, Effective two-pion exchanges, π production",

author = "E. Gedalin and A. Moalem and L. Rasdolskaya",

year = "1999",

month = jan,

day = "1",

doi = "10.1016/S0375-9474(99)00140-2",

language = "English",

volume = "652",

pages = "287--307",

journal = "Nuclear Physics A",

issn = "0375-9474",

publisher = "Elsevier B.V.",

number = "3",

}

TY - JOUR

T1 - S-wave π0 production in pp collisions in a OBE model

AU - Gedalin, E.

AU - Moalem, A.

AU - Rasdolskaya, L.

PY - 1999/1/1

Y1 - 1999/1/1

N2 - The total cross section for the pp → ppπ0 reaction at energies close to threshold is calculated using a covariant one-boson-exchange model, where a boson B created on one of the incoming protons is converted into a neutral pion on the second. The amplitudes for the conversion processes, BN → Nπ0, are taken to be the sum of s, u and t-channel pole terms. The main contributions to the primary production amplitude is due to an effective isoscalar σ meson pole in a t-channel, which is enhanced strongly due to offshellness. With this contribution included the model reproduces, both the scale and energy dependence of the cross section.

AB - The total cross section for the pp → ppπ0 reaction at energies close to threshold is calculated using a covariant one-boson-exchange model, where a boson B created on one of the incoming protons is converted into a neutral pion on the second. The amplitudes for the conversion processes, BN → Nπ0, are taken to be the sum of s, u and t-channel pole terms. The main contributions to the primary production amplitude is due to an effective isoscalar σ meson pole in a t-channel, which is enhanced strongly due to offshellness. With this contribution included the model reproduces, both the scale and energy dependence of the cross section.

KW - Covariant OBE model

KW - Effective two-pion exchanges

KW - π production

UR - https://www.scopus.com/pages/publications/0033147942

U2 - 10.1016/S0375-9474(99)00140-2

DO - 10.1016/S0375-9474(99)00140-2

M3 - Article

AN - SCOPUS:0033147942

SN - 0375-9474

VL - 652

SP - 287

EP - 307

JO - Nuclear Physics A

JF - Nuclear Physics A

IS - 3

ER -