Exclusive f(1)(1285) meson production for energy ranges available at the GSI-FAIR with HADES and PANDA

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61389005%3A_____%2F21%3A00553344" target="_blank" >RIV/61389005:_____/21:00553344 - isvavai.cz</a>

Výsledek na webu

<a href="https://doi.org/10.1103/PhysRevD.104.034031" target="_blank" >https://doi.org/10.1103/PhysRevD.104.034031</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1103/PhysRevD.104.034031" target="_blank" >10.1103/PhysRevD.104.034031</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Exclusive f(1)(1285) meson production for energy ranges available at the GSI-FAIR with HADES and PANDA

Popis výsledku v původním jazyce

We evaluate the cross section for the pp -> ppf(1)(1285) and pp -> ppf(1)(1285) reactions at near threshold energies relevant for the HADES and PANDA experiments at GSI-FAIR. We assume that at energies close to the threshold the omega omega -> f(1)(1285) and rho(0)rho(0) -> f(1)(1285) fusion processes are the dominant production mechanisms. The vertex for the VV -> f(1) coupling is derived from an effective coupling Lagrangian. The g(rho rho f1) coupling constant is extracted from the decay rate of f(1)(1285) -> rho(0)gamma using the vector-meson-dominance ansatz. We assume g(omega omega f1) = g(rho rho f1), equality of these two coupling constants, based on arguments from the naive quark model and vector-meson dominance. The amplitude for the VV -> f(1) fusion, supplemented by phenomenological vertex form factors for the process, is given. The differential cross sections at energies close to the threshold are calculated. In order to determine the parameters of the model the gamma p -> f(1)(1285)(p) reaction is discussed in addition and results are compared with the CLAS data. The possibility of a measurement by HADES@GSI is presented and discussed. We perform a Monte Carlo feasibility simulation of the pp -> ppf(1) reaction for root s = 3.46 GeV with the f(1) decaying into the pi(+)pi(-) pi(+)pi(-) (not shown explicitly) and pi(+)pi(-)eta(->pi(+)pi(-) pi(0)) final states using the PLUTO event generator. The latter f(1) decay is especially promising as a peak in the pi(+)pi(-)eta mass distribution should be observable by HADES.

Název v anglickém jazyce

Exclusive f(1)(1285) meson production for energy ranges available at the GSI-FAIR with HADES and PANDA

Popis výsledku anglicky

We evaluate the cross section for the pp -> ppf(1)(1285) and pp -> ppf(1)(1285) reactions at near threshold energies relevant for the HADES and PANDA experiments at GSI-FAIR. We assume that at energies close to the threshold the omega omega -> f(1)(1285) and rho(0)rho(0) -> f(1)(1285) fusion processes are the dominant production mechanisms. The vertex for the VV -> f(1) coupling is derived from an effective coupling Lagrangian. The g(rho rho f1) coupling constant is extracted from the decay rate of f(1)(1285) -> rho(0)gamma using the vector-meson-dominance ansatz. We assume g(omega omega f1) = g(rho rho f1), equality of these two coupling constants, based on arguments from the naive quark model and vector-meson dominance. The amplitude for the VV -> f(1) fusion, supplemented by phenomenological vertex form factors for the process, is given. The differential cross sections at energies close to the threshold are calculated. In order to determine the parameters of the model the gamma p -> f(1)(1285)(p) reaction is discussed in addition and results are compared with the CLAS data. The possibility of a measurement by HADES@GSI is presented and discussed. We perform a Monte Carlo feasibility simulation of the pp -> ppf(1) reaction for root s = 3.46 GeV with the f(1) decaying into the pi(+)pi(-) pi(+)pi(-) (not shown explicitly) and pi(+)pi(-)eta(->pi(+)pi(-) pi(0)) final states using the PLUTO event generator. The latter f(1) decay is especially promising as a peak in the pi(+)pi(-)eta mass distribution should be observable by HADES.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10304 - Nuclear physics

Projekt

—

Návaznosti

—

Rok uplatnění

2021

Kód důvěrnosti údajů

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

Název periodika

Physical Review D

ISSN

2470-0010

e-ISSN

2470-0029

Svazek periodika

104

Číslo periodika v rámci svazku

3

Stát vydavatele periodika

US - Spojené státy americké

Počet stran výsledku

26

Strana od-do

034031

Kód UT WoS článku

000692077700003

EID výsledku v databázi Scopus

2-s2.0-85114184647