Study of exclusive one-pion and one-eta production using hadron and dielectron channels in pp reactions at kinetic beam energies of 1.25 GeV and 2.2 GeV with HADES

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61389005%3A_____%2F12%3A00384721" target="_blank" >RIV/61389005:_____/12:00384721 - isvavai.cz</a>

Result on the web

<a href="http://dx.doi.org/10.1140/epja/i2012-12074-9" target="_blank" >http://dx.doi.org/10.1140/epja/i2012-12074-9</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1140/epja/i2012-12074-9" target="_blank" >10.1140/epja/i2012-12074-9</a>

Result language

angličtina

Original language name

Study of exclusive one-pion and one-eta production using hadron and dielectron channels in pp reactions at kinetic beam energies of 1.25 GeV and 2.2 GeV with HADES

Original language description

We present measurements of exclusive pi(+,0) and eta production in pp reactions at 1.25 GeV and 2.2 GeV beam kinetic energy in hadron and dielectron channels. In the case of pi(+) and pi(0), high-statistics invariant-mass and angular distributions are obtained within the HADES acceptance as well as acceptance-corrected distributions, which are compared to a resonance model. The sensitivity of the data to the yield and production angular distribution of Delta(1232) and higher-lying baryon resonances is shown, and an improved parameterization is proposed. The extracted cross-sections are of special interest in the case of pp -> pp eta, since controversial data exist at 2.0 GeV; we find sigma = 0.142 +/- 0.022 mb. Using the dielectron channels, the pi(0)and eta Dalitz decay signals are reconstructed with yields fully consistent with the hadronic channels. The electron invariant masses and acceptance-corrected helicity angle distributions are found in good agreement with model predictions

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

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)<br>I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year

2012

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

48

Issue of the periodical within the volume

5

Country of publishing house

DE - GERMANY

Number of pages

17

Pages from-to

1-17

UT code for WoS article

000304696800003

EID of the result in the Scopus database

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