scholarly journals Semileptonic decays D→π+π−e+νe and Ds→π+π−e+νe as the probe of constituent quark-antiquark pairs in the light scalar mesons

2020 ◽  
Vol 102 (1) ◽  
Author(s):  
N. N. Achasov ◽  
A. V. Kiselev ◽  
G. N. Shestakov
Keyword(s):  
Constituent Quark ◽  
Semileptonic Decays ◽  
Scalar Mesons ◽  
Light Scalar

TO LEARN LIGHT SCALARS FROM SEMILEPTONIC DECAYS OF HEAVY QUARKONIA

2014 ◽  
Vol 35 ◽  
pp. 1460447 ◽  
Author(s):  
N. N. ACHASOV ◽  
A. V. KISELEV
Keyword(s):  
Dominant Role ◽  
Semileptonic Decays ◽  
Heavy Quarkonia ◽  
Scalar Mesons ◽  
Pseudoscalar Mesons ◽  
Light Scalar

We study the mechanism of production of the light scalar mesons in the [Formula: see text] decays: [Formula: see text], and compare it with the mechanism of production of the light pseudoscalar mesons in the [Formula: see text] decays: [Formula: see text]. We show that the [Formula: see text] transition is negligibly small in comparison with the [Formula: see text] one. As for the the f0(980) meson, the intensity of the [Formula: see text] transition is not more thirty percent from the intensity of the [Formula: see text] ([Formula: see text]) transition. So, the [Formula: see text] decay supports the previous conclusions about a dominant role of the four-quark components in the σ(600) and f0(980) mesons.

scholarly journals Semileptonic decays of charmed mesons to light scalar mesons

2020 ◽  
Vol 102 (1) ◽  
Author(s):  
N. R. Soni ◽  
A. N. Gadaria ◽  
J. J. Patel ◽  
J. N. Pandya
Keyword(s):  
Semileptonic Decays ◽  
Charmed Mesons ◽  
Scalar Mesons ◽  
Light Scalar ◽  
Decays Of Charmed Mesons

A collisional model for light scalar mesons

2017 ◽  
Vol 32 (34) ◽  
pp. 1750179
Author(s):  
S. S. Afonin
Keyword(s):  
Simple Explanation ◽  
Decay Modes ◽  
Scalar Mesons ◽  
Light Scalar ◽  
The Given ◽  
Scalar Sector

A collisional model for hadron resonances appearing in hadron collisions is proposed. The given approach leads to a simple explanation of the scalar sector below 1 GeV with correct predictions for masses and dominant decay modes.

scholarly journals Light scalar mesons and the data on two-kaon correlation functions

2018 ◽  
Vol 191 ◽  
pp. 04012
Author(s):  
Nikolay N. Achasov ◽  
Alexey V. Kiselev
Keyword(s):  
Correlation Functions ◽  
Scalar Mesons ◽  
Light Scalar

It is shown that the ALICE data on the K0S K+ correlation in Pb-Pb interactions together with the data on the γγ → ηπ0 and φ → ηπ0γ reactions could be simultaneously described when a0(980) has no constituent qq¯ component at all. Besides, the validity of the Gaussian assumption is kept.

ISOVECTOR COMPONENTS OF THE SCALAR σ-MESON FAMILY AS NEW INGREDIENTS FOR NUCLEAR MATTER MODELS

2007 ◽  
Vol 16 (02n03) ◽  
pp. 325-332 ◽  
Author(s):  
EDUARDO LÜTZ ◽  
MOISÉS RAZEIRA ◽  
CÉSAR A. Z. VASCONCELLOS ◽  
BARDO E. J. BODMANN ◽  
FERNANDO PILOTTO
Keyword(s):  
Equation Of State ◽  
Neutron Stars ◽  
Nuclear Matter ◽  
Chiral Symmetry ◽  
Symmetry Transformation ◽  
Recent Analysis ◽  
Scalar Mesons ◽  
The Family ◽  
Macroscopic Properties ◽  
Light Scalar

On the basis of a chiral symmetry transformation, we predict an isovector component for the family of light scalar mesons, i.e. partners of the σ-meson. Such a contribution may be necessary to tune the equation of state of nuclear matter in order to comply with severe constraints from a recent analysis of observational macroscopic properties of neutron stars.

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