The continuum spectrum of hypernuclear trios

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61389005%3A_____%2F20%3A00533998" target="_blank" >RIV/61389005:_____/20:00533998 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/68407700:21340/20:00346458

Výsledek na webu

<a href="https://doi.org/10.1016/j.physletb.2020.135614" target="_blank" >https://doi.org/10.1016/j.physletb.2020.135614</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.physletb.2020.135614" target="_blank" >10.1016/j.physletb.2020.135614</a>

Jazyk výsledku

angličtina

Název v původním jazyce

The continuum spectrum of hypernuclear trios

Popis výsledku v původním jazyce

The spectrum of hypernuclear trios composed of a Lambda baryon and two nucleons is the subject of an ongoing experimental campaign, aiming to study the interaction of the Lambda particle with a neutron, and the 3-body Lambda-nucleon-nucleon force. In this manuscript we utilize baryonic effective field theory at leading order, constrained to reproduce the available low energy light hypernuclear data, to study the continuum spectrum of such hypernuclear trios. Using the complex scaling method and the inverse analytic continuation in the coupling constant method we find the existence of a virtual state in the Lambda np J(pi) = 3/2(+) channel, leading to cross-section enhancement near threshold. For the Lambda nn J(pi) = 1/2(+) channel we predict a resonance state. Depending, however, on the value of the Lambda N scattering length, the resonance pole moves from the physical to the unphysical complex energy sheet within the experimental bounds.

Název v anglickém jazyce

The continuum spectrum of hypernuclear trios

Popis výsledku anglicky

The spectrum of hypernuclear trios composed of a Lambda baryon and two nucleons is the subject of an ongoing experimental campaign, aiming to study the interaction of the Lambda particle with a neutron, and the 3-body Lambda-nucleon-nucleon force. In this manuscript we utilize baryonic effective field theory at leading order, constrained to reproduce the available low energy light hypernuclear data, to study the continuum spectrum of such hypernuclear trios. Using the complex scaling method and the inverse analytic continuation in the coupling constant method we find the existence of a virtual state in the Lambda np J(pi) = 3/2(+) channel, leading to cross-section enhancement near threshold. For the Lambda nn J(pi) = 1/2(+) channel we predict a resonance state. Depending, however, on the value of the Lambda N scattering length, the resonance pole moves from the physical to the unphysical complex energy sheet within the experimental bounds.

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

<a href="/cs/project/GA19-19640S" target="_blank" >GA19-19640S: Studium interakcí hadronů, jejich produkce a vázaných stavů</a><br>

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2020

Kód důvěrnosti údajů

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

Název periodika

Physics Letters. B

ISSN

0370-2693

e-ISSN

—

Svazek periodika

808

Číslo periodika v rámci svazku

SEP

Stát vydavatele periodika

NL - Nizozemsko

Počet stran výsledku

6

Strana od-do

135614

Kód UT WoS článku

000571769700005

EID výsledku v databázi Scopus

2-s2.0-85088380855