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Author |
Ji, T.; Dong, X.K.; Albaladejo, M.; Du, M.L.; Guo, F.K.; Nieves, J.; Zou, B.S. |
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Title |
Understanding the 0(++) and 2(++) charmonium(-like) states near 3.9 GeV |
Type |
Journal Article |
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Year |
2023 |
Publication |
Science Bulletin |
Abbreviated Journal |
Sci. Bull. |
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Volume |
68 |
Issue |
7 |
Pages |
688-697 |
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Keywords  |
Charmonium(-like) states; Hadronic molecules; Heavy quark spin symmetry; Exotic hadrons; Hadron-hadron interactions |
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Abstract |
We propose that the X(3915) observed in the J/psi x channel is the same state as the chi(c2)(3930), and the X(3960), observed in the Ds+Ds- channel, is an S-wave Ds+Ds- hadronic molecule. In addition, the J(PC) = 0(++) component in the B+ -> D+D-K+ assigned to the X(3915) in the current Review of Particle Physics has the same origin as the X(3960), which has a mass around 3.94 GeV. To check the proposal, the available data in the D (D) over bar and Ds+Ds- channels from both B decays and gamma gamma fusion reaction are analyzed considering both the D (D) over bar -D-s(D) over bar (s)-D*(D) over bar*-D-s*(D) over bar (s)* coupled channels with 0(++) and a 2(++) state introduced additionally. It is found that all the data in different processes can be simultaneously well reproduced, and the coupled-channel dynamics produce four hidden-charm scalar molecular states with masses around 3.73, 3.94, 3.99 and 4.23 GeV, respectively. The results may deepen our understanding of the spectrum of charmonia as well as of the interactions between charmed hadrons. |
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Address |
[Ji, Teng; Dong, Xiang-Kun; Guo, Feng-Kun; Zou, Bing-Song] Inst Theoret Phys, Chinese Acad Sci, CAS Key Lab Theoret Phys, Beijing 100190, Peoples R China, Email: jiteng@itp.ac.cn; |
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Elsevier |
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English |
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ISSN |
2095-9273 |
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Notes |
WOS:000985290600001 |
Approved |
no |
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Is ISI |
yes |
International Collaboration |
yes |
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Call Number |
IFIC @ pastor @ |
Serial |
5520 |
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Author |
Penalva, N.; Flynn, J.M.; Hernandez, E.; Nieves, J. |
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Title |
Study of new physics effects in (B)over-bars → Ds(*) τ-(ν)over-bar τ semileptonic decays using lattice QCD form factors and heavy quark effective theory |
Type |
Journal Article |
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Year |
2024 |
Publication |
Journal of High Energy Physics |
Abbreviated Journal |
J. High Energy Phys. |
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Volume |
01 |
Issue |
1 |
Pages |
163 - 33pp |
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Keywords |
Effective Field Theories of QCD; Flavour Symmetries; Semi-Leptonic Decays; SMEFT |
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Abstract |
We benefit from the lattice QCD determination by the HPQCD of the Standard Model (SM) form factors for the (B) over bar (s) -> D-s [Phys. Rev. D101(2020) 074513] and the SM and tensor ones for the (B) over bar (s) -> D-s* (arXiv:2304.03137[hep-lat]) semileptonic decays, and the heavy quark effective theory (HQET) relations for the analogous B -> D-(*()) decays obtained by F.U. Bernlochner et al. in Phys. Rev. D95(2017) 115008, to extract the leading and sub-leading Isgur-Wise functions for the (B) over bar (s) -> D-s(()*()) decays. Further use of the HQET relations allows us to evaluate the corresponding scalar, pseudoscalar and tensor form factors needed for a phenomenological study of new physics (NP) effects on the (B) over bar (s) -> D-s(()*()) semileptonic decay. At present, the experimental values for the ratios R-D(*) = Gamma[ (B) over bar -> D-(*())(tau- (nu) over bar tau)]/Gamma[(B) over bar -> D-(*())e(-)(mu(-)) (nu) over bar (e(mu))]are the best signal in favor of lepton flavor universality violation (LFUV) seen in charged current (CC) b -> c decays. In this work we conduct a study of NP effects on the (B) over bar (s) -> D-s(()*()) tau(-)(tau) semileptonic decays by comparing tau spin, angular and spin-angular asymmetry distributions obtained within the SM and three different NP scenarios. As expected from SU(3) light-flavor symmetry, we get results close to the ones found in a similar analysis of the (B) over bar -> D-(*()) case. The measurement of the (B) over bar (s) -> D-s(()*())(l (nu) over bar tau) semileptonic decays, which is within reach of present experiments, could then be of relevance in helping to establish or rule out LFUV in CC b -> c transitions. |
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Address |
[Penalva, Neus; Nieves, Juan] Ctr Mixto CSIC UV, Inst Fis Corpuscular, Inst Invest Paterna, C Catedrat Jose Beltran 2, E-46980 Paterna, Valencia, Spain, Email: neus.penalva@icc.ub.edu; |
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Springer |
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English |
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ISSN |
1029-8479 |
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Notes |
WOS:001152794800001 |
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no |
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Is ISI |
yes |
International Collaboration |
yes |
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Call Number |
IFIC @ pastor @ |
Serial |
5922 |
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Author |
Baru, V.; Dong, X.K.; Du, M.L.; Filin, A.; Guo, F.K.; Hanhart, C.; Nefediev, A.; Nieves, J.; Wang, Q. |
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Title |
Effective range expansion for narrow near-threshold resonances |
Type |
Journal Article |
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Year |
2022 |
Publication |
Physics Letters B |
Abbreviated Journal |
Phys. Lett. B |
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Volume |
833 |
Issue |
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Pages |
137290 - 7pp |
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Keywords |
Effective range expansion; Exotic states; Tetraquarks; Hadronic molecules |
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Abstract |
We discuss some general features of the effective range expansion, the content of its parameters with respect to the nature of the pertinent near-threshold states and the necessary modifications in the presence of coupled channels, isospin violations and unstable constituents. As illustrative examples, we analyse the properties of the chi(c1)(3872) and T-cc(+) states supporting the claim that these exotic states have a predominantly molecular nature. |
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Address |
[Baru, Vadim; Filin, Arseniy] Ruhr Univ Bochum, Inst Theoret Phys 2, D-44780 Bochum, Germany, Email: vadimb@tp2.rub.de |
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Elsevier |
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English |
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Edition |
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ISSN |
0370-2693 |
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Notes |
WOS:000837882700019 |
Approved |
no |
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Is ISI |
yes |
International Collaboration |
yes |
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Call Number |
IFIC @ pastor @ |
Serial |
5327 |
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Author |
Vidaña, I.; Feijoo, A.; Albaladejo, M.; Nieves, J.; Oset, E. |
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Title |
Femtoscopic correlation function for the Tcc(3875)+ state |
Type |
Journal Article |
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Year |
2023 |
Publication |
Physics Letters B |
Abbreviated Journal |
Phys. Lett. B |
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Volume |
846 |
Issue |
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Pages |
138201 - 9pp |
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Keywords |
Femtoscopy; Tcc |
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Abstract |
We have conducted a study of the femtoscopic correlation functions for the D0D*+ and D+D*0 channels that build the Tcc state. We develop a formalism that allows us to factorize the scattering amplitudes outside the integrals in the formulas, and the integrals involve the range of the strong interaction explicitly. For a source of size of 1 fm, we find values for the correlation functions of the D0D*+ and D+D*0 channels at the origin around 30 and 2.5, respectively, and we see these observables converging to unity already for relative momenta of the order of 200 MeV. We conduct tests to see the relevance of the different contributions to the correlation function and find that it mostly provides information on the scattering length, but should the correlation functions be measured with the precision of the latest experiments, the effective range of the D0D*+ could also be obtained. |
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Address |
[Vidana, I.] Univ Catania, Ist Nazl Fis Nucl, Dipartimento Fis Ettore Majorana, Sez Catania, Via Santa Sofia 64, I-95123 Catania, Italy, Email: isaac.vidana@ct.infn.it |
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Elsevier |
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English |
Summary Language |
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Series Editor |
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Series Volume |
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Edition |
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ISSN |
0370-2693 |
ISBN |
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Conference |
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Notes |
WOS:001092697200001 |
Approved |
no |
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Is ISI |
yes |
International Collaboration |
yes |
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Call Number |
IFIC @ pastor @ |
Serial |
5777 |
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Author |
Oset, E. et al; Albaladejo, M.; Nieves, J.; Fernandez-Soler, P.; Sun, Z.F. |
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Title |
Weak decays of heavy hadrons into dynamically generated resonances |
Type |
Journal Article |
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Year |
2016 |
Publication |
International Journal of Modern Physics E |
Abbreviated Journal |
Int. J. Mod. Phys. E |
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Volume |
25 |
Issue |
1 |
Pages |
1630001 - 105pp |
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Keywords |
Heavy meson and baryon weak decays; mesonic and baryonic resonances; final state interaction |
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Abstract |
In this paper, we present a review of recent works on weak decay of heavy mesons and baryons with two mesons, or a meson and a baryon, interacting strongly in the final state. The aim is to learn about the interaction of hadrons and how some particular resonances are produced in the reactions. It is shown that these reactions have peculiar features and act as filters for some quantum numbers which allow to identify easily some resonances and learn about their nature. The combination of basic elements of the weak interaction with the framework of the chiral unitary approach allow for an interpretation of results of many reactions and add a novel information to different aspects of the hadron interaction and the properties of dynamically generated resonances. |
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Address |
[Oset, Eulogio; Xie, Ju-Jun] Chinese Acad Sci, Inst Modern Phys, Lanzhou 730000, Peoples R China |
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Publisher |
World Scientific Publ Co Pte Ltd |
Place of Publication |
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Language |
English |
Summary Language |
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Original Title |
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Series Editor |
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Series Title |
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Abbreviated Series Title |
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Series Volume |
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Series Issue |
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Edition |
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ISSN |
0218-3013 |
ISBN |
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Conference |
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Notes |
WOS:000371308700001 |
Approved |
no |
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Is ISI |
yes |
International Collaboration |
yes |
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Call Number |
IFIC @ pastor @ |
Serial |
2568 |
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