Zobrazeno 1 - 10
of 10
pro vyhledávání: '"Verónica Riquer"'
Publikováno v:
Symmetry, Vol 13, Iss 5, p 751 (2021)
The charmonium-like exotic states Y(4230) and the less known Y(4320), produced in e+e− collisions, are sources of positive parity exotic hadrons in association with photons or pseudoscalar mesons. We analyze the radiative and pion decay channels in
Externí odkaz:
https://doaj.org/article/362d078ee3a44f18a602ff0ebb370363
Publikováno v:
Physical Review
From a study of the lineshape of the $X(3872)$, the LHCb collaboration measures a sizeable negative effective range. This cannot be reconciled with a shallow $D\bar{D}^*$ bound state hypothesis. Based on Weinberg's compositeness criterion, together w
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::a57b6edb4317d5d52a4afdfab83f2d9c
Publikováno v:
European Physical Journal C: Particles and Fields, Vol 83, Iss 5, Pp 1-12 (2023)
Abstract We study compact hidden charm pentaquarks in the Born–Oppenheimer approximation, previously introduced for tetraquarks, assuming the heavy pair to be in a color octet. We show that Fermi statistics applied to the complex of the three light
Externí odkaz:
https://doaj.org/article/dec24cfc0e5e4b6f889bd1d40ff0ca0a
Autor:
Verónica Riquer, Marcos Moshinsky
Publikováno v:
Journal of Physics A: Mathematical and General. 36:2163-2174
It is well known that the analysis of a relativistic n-body problem invariant under the transformations of the Poincar? group and involving only one time has only been done for n = 1. For n > 1 one uses the second quantization formalism of field theo
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::e1ef1df4aae9712c0f2ae5bc3062bcf6
https://doi.org/10.1088/0305-4470/36/8/313
https://doi.org/10.1088/0305-4470/36/8/313
Autor:
Verónica Riquer, Marcos Moshinsky
Publikováno v:
Journal of Physics A: Mathematical and General. 35:8467-8477
Use of the Dirac equation for a single particle in an electromagnetic field has led to many successful predictions. For more than one particle, the approach is usually through quantum field theory. In this contribution, we follow the original Dirac a
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::5145d866d0594355b297d0ce62b79741
https://doi.org/10.1088/0305-4470/35/40/307
https://doi.org/10.1088/0305-4470/35/40/307
Publikováno v:
Journal of Physics A: Mathematical and General. 34:4155-4165
An exact single-level resonance formula for the survival probability S(t) in the full time interval, that depends only on the resonance energy r and the decay width ?r and fulfils time-reversal invariance, is used to discuss the non-exponential contr
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::87bba28da71b164d8e617ff552bd948d
https://doi.org/10.1088/0305-4470/34/19/313
https://doi.org/10.1088/0305-4470/34/19/313
Publikováno v:
Physics Letters B, Vol 836, Iss , Pp 137624- (2023)
Tetraquarks QQq¯q¯ are found to be described remarkably well with the Quantum Chromodynamics version of the Hydrogen bond, as treated with the Born-Oppenheimer approximation. We show the robustness of the method by computing the mass of the observe
Externí odkaz:
https://doaj.org/article/c24d4a3dd3e94d6db1508eef4e6fba9e
Autor:
Verónica Riquer, Marcos Moshinsky
Publikováno v:
International Journal of Modern Physics E. :559-571
Atomic and molecular physicists have developed extensive and detailed approximate methods for dealing with the relativistic versions of the Hamiltonians appearing in their fields. Nuclear physicists were originally more concerned with non-relativisti
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::513d7aa7efee7f2d9fb1d3638bb01376
https://doi.org/10.1142/s0218301398000300
https://doi.org/10.1142/s0218301398000300
Publikováno v:
European Physical Journal C: Particles and Fields, Vol 78, Iss 12, Pp 1-10 (2018)
Abstract We study the multiquark hadrons in large N QCD under the ’t-Hooft limit, extending Witten’s picture of the baryons. We explore the decay widths of tetraquarks, pentaquarks and dibaryons. Based on the decay behaviors, we point out that in
Externí odkaz:
https://doaj.org/article/ac616658d3494972a8b548becdc34161
Publikováno v:
Physics Letters B, Vol 778, Iss C, Pp 247-251 (2018)
We introduce the hypothesis that diquarks and antidiquarks in tetraquarks are separated by a potential barrier. We show that this notion can answer satisfactorily long standing questions challenging the diquark–antidiquark model of exotic resonance
Externí odkaz:
https://doaj.org/article/341ba694c552441992bef00ee3ae66a6