Antibaryon interactions with the nuclear medium

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61389005%3A_____%2F16%3A00489090" target="_blank" >RIV/61389005:_____/16:00489090 - isvavai.cz</a>

Result on the web

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DOI - Digital Object Identifier

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Result language

angličtina

Original language name

Antibaryon interactions with the nuclear medium

Original language description

This contribution deals with our recent study of antibaryon interactions with the nuclear medium within the relativistic mean-field approach using antibaryon coupling constants consistent with available experimental data. We performed calculations of anti B (anti B = anti p, anti Lambda, anti Sigma, anti Xi) bound states in selected nuclei. Due to the lack of information on the in-medium antihyperon annihilation near threshold only the anti p absorption was considered. It was described by the imaginary part of a phenomenological optical potential fitted to anti p-atom data. The annihilation was treated dynamically, taking into account explicitly the reduced phase space for annihilation products in the nuclear medium, as well as the compressed nuclear density due to the antiproton. The energy available for the annihilation products was evaluated self-consistently, considering additional energy shift due to particle momenta in the anti p-nucleus system. Corresponding anti p widths were significantly reduced, however, they still remain sizable. Next, the anti p-nucleus interaction was constructed using the latest version of the Paris antiNN potential. Related scattering amplitudes were used to define the complex anti p optical potential in the nuclear medium. The resulting anti p 1s binding energies are about 10% smaller and widths about 20% larger than those obtained with the phenomenological approach.

Czech name

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Czech description

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Type

D - Article in proceedings

CEP classification

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OECD FORD branch

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

Project

<a href="/en/project/GA15-04301S" target="_blank" >GA15-04301S: Interactions of hadrons with nucleons and nuclei</a><br>

Continuities

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year

2016

Confidentiality

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

Article name in the collection

Proceedings of Science

ISBN

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ISSN

1824-8039

e-ISSN

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Number of pages

8

Pages from-to

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Publisher name

PoS

Place of publication

Adelaide

Event location

Adelaide

Event date

Sep 11, 2016

Type of event by nationality

WRD - Celosvětová akce

UT code for WoS article

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