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

Agakishiev, G.; Balanda, A.; Bokemeyer, H.; Finocchiaro, P.; Guber, F.; Gumberidze, M.; Karavicheva, T.; Křížek, Filip; Kugler, Andrej; Markert, J.; Pachmayer, Y.C.; Pechenova, O.; Pospíšil, Vladimír; Rustamov, A.; Sobolev, Yuri, G.; Strobele, H.; Tarantola, A.; Teilab, K.; Tlustý, Pavel; Wagner, Vladimír

doi:https://dx.doi.org/10.1140/epja/i2012-12074-9

Počet záznamů: 1

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

1.

SYSNO ASEP	0384721
Druh ASEP	J - Článek v odborném periodiku
Zařazení RIV	J - Článek v odborném periodiku
Poddruh J	Článek ve WOS
Název	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
Tvůrce(i)	Agakishiev, G. (DE) Balanda, A. (PL) Bokemeyer, H. (DE) Finocchiaro, P. (IT) Guber, F. (RU) Gumberidze, M. (FR) Karavicheva, T. (RU) Křížek, Filip (UJF-V)_{RID, ORCID, SAI} Kugler, Andrej (UJF-V)_{RID, ORCID, SAI} Markert, J. (DE) Pachmayer, Y.C. (DE) Pechenova, O. (DE) Pospíšil, Vladimír (UJF-V) Rustamov, A. (DE) Sobolev, Yuri, G. (UJF-V)_ORCID Strobele, H. (DE) Tarantola, A. (DE) Teilab, K. (DE) Tlustý, Pavel (UJF-V)_{ORCID, SAI} Wagner, Vladimír (UJF-V)_{RID, ORCID, SAI}
Celkový počet autorů	95
Zdroj.dok.	European Physical Journal A. - : Springer - ISSN 1434-6001 Roč. 48, č. 5 (2012), s. 1-17
Poč.str.	17 s.
Jazyk dok.	eng - angličtina
Země vyd.	DE - Německo
Klíč. slova	meson production ; relativistic collision ; dilepton production
Vědní obor RIV	BG - Jaderná, atomová a mol. fyzika, urychlovače
CEP	LC07050 GA MŠMT - Ministerstvo školství, mládeže a tělovýchovy
	IAA100480803 GA AV ČR - Akademie věd
Institucionální podpora	UJF-V - RVO:61389005
UT WOS	000304696800003
DOI	10.1140/epja/i2012-12074-9
Anotace	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.
Pracoviště	Ústav jaderné fyziky
Kontakt	Markéta Sommerová, sommerova@ujf.cas.cz, Tel.: 266 173 228
Rok sběru	2013

Počet záznamů: 1