Baryon resonance production and dielectron decays in proton-proton collisions at 3.5 GeV

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61389005%3A_____%2F14%3A00428664" target="_blank" >RIV/61389005:_____/14:00428664 - isvavai.cz</a>

Result on the web

<a href="http://dx.doi.org/10.1140/epja/i2014-14082-1" target="_blank" >http://dx.doi.org/10.1140/epja/i2014-14082-1</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1140/epja/i2014-14082-1" target="_blank" >10.1140/epja/i2014-14082-1</a>

Result language

angličtina

Original language name

Baryon resonance production and dielectron decays in proton-proton collisions at 3.5 GeV

Original language description

We report on baryon resonance production and decay in proton-proton collisions at a kinetic energy of 3.5 GeV based on data measured with HADES. The exclusive channels pp -> np pi(+) and pp -> pp pi(0) as well as pp -> ppe(+)e(-) are studied simultaneously for the first time. The invariant masses and angular distributions of the pion-nucleon systems were studied and compared to simulations based on a resonance model ansatz assuming saturation of the pion production by an incoherent sum of baryonic resonances (R) with masses < 2 GeV/c(2). A very good description of the one-pion production is achieved allowing for an estimate of individual baryon resonance production cross sections which are used as input to calculate the dielectron yields from R -> pe(+)e(-) decays. Two models of the resonance decays into dielectrons are examined assuming a point-like RN gamma* coupling and the dominance of the rho meson. The results of model calculations are compared to data from the exclusive ppe(+)e(

Czech name

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Czech description

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Type

J_x - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)

CEP classification

BG - Nuclear, atomic and molecular physics, accelerators

OECD FORD branch

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Project

Result was created during the realization of more than one project. More information in the Projects tab.

Continuities

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year

2014

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Name of the periodical

European Physical Journal A

ISSN

1434-6001

e-ISSN

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Volume of the periodical

50

Issue of the periodical within the volume

5

Country of publishing house

US - UNITED STATES

Number of pages

16

Pages from-to

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UT code for WoS article

000335735700002

EID of the result in the Scopus database

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