Modified pi pi amplitude with sigma pole

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61389005%3A_____%2F14%3A00439718" target="_blank" >RIV/61389005:_____/14:00439718 - isvavai.cz</a>

Výsledek na webu

<a href="http://dx.doi.org/10.1103/PhysRevD.90.116005" target="_blank" >http://dx.doi.org/10.1103/PhysRevD.90.116005</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1103/PhysRevD.90.116005" target="_blank" >10.1103/PhysRevD.90.116005</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Modified pi pi amplitude with sigma pole

Popis výsledku v původním jazyce

A set of well-known once subtracted dispersion relations with imposed crossing symmetry condition is used to modify unitary multichannel S (pi pi, K (K) over bar, and eta eta) and P (pi pi, rho 2 pi, and rho sigma) wave amplitudes mostly below 1 GeV. Before the modifications, these amplitudes significantly did not satisfy the crossing symmetry condition and did not describe the pi pi threshold region. Moreover, the pole of the S wave amplitude related with the f(0)(500) meson (former f(0)(600) or sigma)had much smaller imaginary part and bigger real one in comparison with those in the newest Particle Data Group Tables. Here, these amplitudes are supplemented by near threshold expansion polynomials and refitted to the experimental data in the effectivetwo pion mass from the threshold to 1.8 GeV and to the dispersion relations up to 1.1 GeV. In result the self consistent, i.e., unitary and fulfilling the crossing symmetry condition, S and P wave amplitudes are formed and the sigma pole

Název v anglickém jazyce

Modified pi pi amplitude with sigma pole

Popis výsledku anglicky

A set of well-known once subtracted dispersion relations with imposed crossing symmetry condition is used to modify unitary multichannel S (pi pi, K (K) over bar, and eta eta) and P (pi pi, rho 2 pi, and rho sigma) wave amplitudes mostly below 1 GeV. Before the modifications, these amplitudes significantly did not satisfy the crossing symmetry condition and did not describe the pi pi threshold region. Moreover, the pole of the S wave amplitude related with the f(0)(500) meson (former f(0)(600) or sigma)had much smaller imaginary part and bigger real one in comparison with those in the newest Particle Data Group Tables. Here, these amplitudes are supplemented by near threshold expansion polynomials and refitted to the experimental data in the effectivetwo pion mass from the threshold to 1.8 GeV and to the dispersion relations up to 1.1 GeV. In result the self consistent, i.e., unitary and fulfilling the crossing symmetry condition, S and P wave amplitudes are formed and the sigma pole

Druh

J_x - Nezařazeno - Článek v odborném periodiku (Jimp, Jsc a Jost)

CEP obor

BE - Teoretická fyzika

OECD FORD obor

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Projekt

<a href="/cs/project/GAP203%2F12%2F2126" target="_blank" >GAP203/12/2126: Mikroskopické modely pro popis hadronových systémů</a><br>

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2014

Kód důvěrnosti údajů

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

Název periodika

Physical Review D: Particles, Fields, Gravitation and Cosmology

ISSN

1550-7998

e-ISSN

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Svazek periodika

90

Číslo periodika v rámci svazku

11

Stát vydavatele periodika

US - Spojené státy americké

Počet stran výsledku

11

Strana od-do

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Kód UT WoS článku

000346670700005

EID výsledku v databázi Scopus

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