Roper resonance-Its static and dynamic properties from single- and double-pion production

T. Skorodko; M. Bashkanov; H. Clement; E. Doroshkevich; O. Khakimova; F. Kren; G. J. Wagner

doi:10.1016/j.ppnp.2007.12.030

Roper resonance-Its static and dynamic properties from single- and double-pion production

T. Skorodko, M. Bashkanov, H. Clement^*, E. Doroshkevich, O. Khakimova, F. Kren, G. J. Wagner

^*Corresponding author for this work

Physics

Research output: Contribution to journal › Short survey › peer-review

Abstract

In most investigations the Roper resonance is sensed only very indirectly via complex partial wave analyses. We find indications for its excitation in the p p → n p π⁺ reaction, where some resonance-like structure is observed in the invariant n π⁺ mass spectrum at M ≈ 1360 MeV with a width of 150 MeV. The values fit very favorably to the most recent phase shift results as well as to the observations at BES. In near-threshold two-pion production p p → p p π⁰ π⁰ the Roper excitation and its subsequent decay into N π π is the only dominant process. There we find its decay into the N σ channel as the dominating decay process - in favor of a monopole nature of the Roper excitation.

Original language	English
Pages (from-to)	168-169
Number of pages	2
Journal	Progress in Particle and Nuclear Physics
Volume	61
Issue number	1
DOIs	https://doi.org/10.1016/j.ppnp.2007.12.030
Publication status	Published - 1 Jul 2008

Keywords

Decay properties
Monopole nature
Roper resonance

Access to Document

10.1016/j.ppnp.2007.12.030

Cite this

@article{8eb23a72296841ad947974fb0e6d5565,

title = "Roper resonance-Its static and dynamic properties from single- and double-pion production",

abstract = "In most investigations the Roper resonance is sensed only very indirectly via complex partial wave analyses. We find indications for its excitation in the p p → n p π+ reaction, where some resonance-like structure is observed in the invariant n π+ mass spectrum at M ≈ 1360 MeV with a width of 150 MeV. The values fit very favorably to the most recent phase shift results as well as to the observations at BES. In near-threshold two-pion production p p → p p π0 π0 the Roper excitation and its subsequent decay into N π π is the only dominant process. There we find its decay into the N σ channel as the dominating decay process - in favor of a monopole nature of the Roper excitation.",

keywords = "Decay properties, Monopole nature, Roper resonance",

author = "T. Skorodko and M. Bashkanov and H. Clement and E. Doroshkevich and O. Khakimova and F. Kren and Wagner, {G. J.}",

year = "2008",

month = jul,

day = "1",

doi = "10.1016/j.ppnp.2007.12.030",

language = "English",

volume = "61",

pages = "168--169",

journal = "Progress in Particle and Nuclear Physics",

issn = "0146-6410",

publisher = "Elsevier",

number = "1",

}

TY - JOUR

T1 - Roper resonance-Its static and dynamic properties from single- and double-pion production

AU - Skorodko, T.

AU - Bashkanov, M.

AU - Clement, H.

AU - Doroshkevich, E.

AU - Khakimova, O.

AU - Kren, F.

AU - Wagner, G. J.

PY - 2008/7/1

Y1 - 2008/7/1

N2 - In most investigations the Roper resonance is sensed only very indirectly via complex partial wave analyses. We find indications for its excitation in the p p → n p π+ reaction, where some resonance-like structure is observed in the invariant n π+ mass spectrum at M ≈ 1360 MeV with a width of 150 MeV. The values fit very favorably to the most recent phase shift results as well as to the observations at BES. In near-threshold two-pion production p p → p p π0 π0 the Roper excitation and its subsequent decay into N π π is the only dominant process. There we find its decay into the N σ channel as the dominating decay process - in favor of a monopole nature of the Roper excitation.

AB - In most investigations the Roper resonance is sensed only very indirectly via complex partial wave analyses. We find indications for its excitation in the p p → n p π+ reaction, where some resonance-like structure is observed in the invariant n π+ mass spectrum at M ≈ 1360 MeV with a width of 150 MeV. The values fit very favorably to the most recent phase shift results as well as to the observations at BES. In near-threshold two-pion production p p → p p π0 π0 the Roper excitation and its subsequent decay into N π π is the only dominant process. There we find its decay into the N σ channel as the dominating decay process - in favor of a monopole nature of the Roper excitation.

KW - Decay properties

KW - Monopole nature

KW - Roper resonance

UR - http://www.scopus.com/inward/record.url?scp=43149095346&partnerID=8YFLogxK

U2 - 10.1016/j.ppnp.2007.12.030

DO - 10.1016/j.ppnp.2007.12.030

M3 - Short survey

AN - SCOPUS:43149095346

SN - 0146-6410

VL - 61

SP - 168

EP - 169

JO - Progress in Particle and Nuclear Physics

JF - Progress in Particle and Nuclear Physics

IS - 1

ER -

Roper resonance-Its static and dynamic properties from single- and double-pion production

Abstract

Keywords

Access to Document

Other files and links

Cite this