The effect of processes pi pi -> pi pi, K(K)over-bar, eta eta in decays of the Psi- and Upsilon-meson families

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61389005%3A_____%2F15%3A00450273" target="_blank" >RIV/61389005:_____/15:00450273 - isvavai.cz</a>

Result on the web

<a href="http://pos.sissa.it/archive/conferences/225/114/Baldin%20ISHEPP%20XXII_114.pdf" target="_blank" >http://pos.sissa.it/archive/conferences/225/114/Baldin%20ISHEPP%20XXII_114.pdf</a>

DOI - Digital Object Identifier

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Result language

angličtina

Original language name

The effect of processes pi pi -> pi pi, K(K)over-bar, eta eta in decays of the Psi- and Upsilon-meson families

Original language description

The effect of isoscalar S-wave processes pi pi ->pi pi, K(K)over-bar, eta eta is considered in the analysis of data (from the Argus, Crystal Ball, CLEO, CUSB, DM2, Mark II, Mark III, and BES II Collaborations) on decays of the charmonium ? J/psi -> Upsilon(pi pi,K(K)over-bar) and psi(2S) ->J/psi pi pi ? and of the bottomonium ? Upsilon(2S) -> Upsilon(1S)pi pi, Upsilon(3S) -> Upsilon(1S) pi pi and Upsilon(3S) -> Upsilon(2S)pi pi. Results of the analysis confirm all our earlier conclusions on the scalar mesons. It is also shown that in the final states of the Psi and Upsilon-meson family decays (except for the ?? scattering) the contribution of the coupled processes, e.g., K(K)over-bar -> pi pi, is important even if these processes are energetically forbidden. This is in accordance with our previous conclusions on the wide resonances. E.g., a new and natural mechanism of destructive interference in the decay Upsilon(3S) -> Upsilon(1S) pi pi is indicated on the basis of that consideration

Czech name

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Czech description

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Type

D - Article in proceedings

CEP classification

BE - Theoretical physics

OECD FORD branch

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Project

<a href="/en/project/LG14004" target="_blank" >LG14004: Cooperation of Czech Republic with JINR Dubna in the theoretical and nuclear physics and application of nuclear methods in other fields</a><br>

Continuities

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year

2015

Confidentiality

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

Article name in the collection

PoS - Proceedings of Science

ISBN

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ISSN

1824-8039

e-ISSN

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Number of pages

14

Pages from-to

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Publisher name

International School for Advanced Studies

Place of publication

Trieste

Event location

Dubna

Event date

Sep 15, 2014

Type of event by nationality

WRD - Celosvětová akce

UT code for WoS article

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