Calculations of antiproton nucleus quasi-bound states using the Paris (N)over-barN potential

Kód výsledku v IS VaVaI

RIV/61389005:_____/18:00486475 - isvavai.cz

Výsledek na webu

http://dx.doi.org/10.1016/j.nuclphysa.2017.09.011

DOI - Digital Object Identifier

10.1016/j.nuclphysa.2017.09.011

Jazyk výsledku

angličtina

Název v původním jazyce

Calculations of antiproton nucleus quasi-bound states using the Paris (N)over-barN potential

Popis výsledku v původním jazyce

An optical potential constructed using the (p) over barN scattering amplitudes derived from the 2009 version of the Paris (N) over barN potential is applied in calculations of (p) over bar quasi-bound states in selected nuclei across the periodic table. A proper self-consistent procedure for treating energy dependence of the amplitudes in a nucleus appears crucial for evaluating (p) over bar binding energies and widths. Particular attention is paid to the role of P-wave amplitudes. While the P-wave potential nearly does not affect calculated (p) over bar binding energies, it reduces considerably the corresponding widths. The Paris S-wave potential supplemented by a phenomenological P-wave term yields in dynamical calculations (p) over bar binding energies B-(p) over bar approximate to 200 MeV and widths Gamma((p) over bar) similar to 200-230 MeV, which is very close to the values obtained within the RMF model consistent with (p) over bar -atom data.

Název v anglickém jazyce

Calculations of antiproton nucleus quasi-bound states using the Paris (N)over-barN potential

Popis výsledku anglicky

An optical potential constructed using the (p) over barN scattering amplitudes derived from the 2009 version of the Paris (N) over barN potential is applied in calculations of (p) over bar quasi-bound states in selected nuclei across the periodic table. A proper self-consistent procedure for treating energy dependence of the amplitudes in a nucleus appears crucial for evaluating (p) over bar binding energies and widths. Particular attention is paid to the role of P-wave amplitudes. While the P-wave potential nearly does not affect calculated (p) over bar binding energies, it reduces considerably the corresponding widths. The Paris S-wave potential supplemented by a phenomenological P-wave term yields in dynamical calculations (p) over bar binding energies B-(p) over bar approximate to 200 MeV and widths Gamma((p) over bar) similar to 200-230 MeV, which is very close to the values obtained within the RMF model consistent with (p) over bar -atom data.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10301 - Atomic, molecular and chemical physics (physics of atoms and molecules including collision, interaction with radiation, magnetic resonances, Mössbauer effect)

Projekt

GA15-04301S: Interakce hadronů s nukleony a jádry

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Rok uplatnění

2018

Kód důvěrnosti údajů

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

Název periodika

Nuclear Physics. A

ISSN

0375-9474

e-ISSN

—

Svazek periodika

969

Číslo periodika v rámci svazku

1

Stát vydavatele periodika

NL - Nizozemsko

Počet stran výsledku

15

Strana od-do

45-59

Kód UT WoS článku

000418974800004

EID výsledku v databázi Scopus

—