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Author Liang, W.H.; Dias, J.M.; Debastiani, V.R.; Oset, E.
Title Molecular Omega(b) states Type Journal Article
Year 2018 Publication Nuclear Physics B Abbreviated Journal Nucl. Phys. B
Volume 930 Issue Pages 524-532
Keywords
Abstract Motivated by the recent finding of five Omega(c) states by the LHCb collaboration, and the successful reproduction of three of them in a recent approach searching for molecular states of meson-baryon with the quantum numbers of Omega(c), we extend these ideas and make predictions for the interaction of meson-baryon in the beauty sector, searching for poles in the scattering matrix that correspond to physical states. We find several Omega(b) states: two states with masses 6405 MeV and 6465 MeV for J(P) = 1/2(-) ; two more states with masses 6427 MeV and 6665 MeV for 3/4(-) ; and three states between 6500 and 6820 MeV, degenerate with J(P) = 1/2(-), 3/4(-), stemming from the interaction of vector-baryon in the beauty sector.
Address [Liang, Wei-Hong] Guangxi Normal Univ, Dept Phys, Guilin 541004, Peoples R China, Email: liangwh@gxnu.edu.cn;
Corporate Author Thesis
Publisher Elsevier Science Bv Place of Publication Editor
Language English Summary Language Original Title
Series Editor Series Title Abbreviated Series Title
Series Volume Series Issue Edition
ISSN (up) 0550-3213 ISBN Medium
Area Expedition Conference
Notes WOS:000435647100019 Approved no
Is ISI yes International Collaboration yes
Call Number IFIC @ pastor @ Serial 3636
Permanent link to this record
 
 
Author Aceti, F.; Bayar, M.; Dias, J.M.; Oset, E.
Title Prediction of a Z(c)(4000) state and relationship with the claimed Z(c)(4025) Type Journal Article
Year 2014 Publication European Physical Journal A Abbreviated Journal Eur. Phys. J. A
Volume 50 Issue 6 Pages 103 - 13pp
Keywords
Abstract After discussing the OZI suppression of one light meson exchange in the interaction of with isospin I = 1 , we study the contribution of the two-pion exchange to the interaction and the exchange of heavy vectors, J/psi for diagonal transitions and D-* for transitions of to J/psi rho. We find these latter mechanisms to be weak, but enough to barely bind the system in J = 2 with a mass around 4000 MeV, while the effect of the two-pion exchange is a net attraction, though weaker than that from heavy-vector exchange. We discuss this state and try to relate it to the Z (c) (4025) state, above the threshold, claimed in an experiment at BES from an enhancement of the distribution close to threshold. Together with the results from a recent reanalysis of the BES experiment showing that it is compatible with a J = 2 state below threshold around 3990 MeV, we conclude that the BES experiment could show the existence of the state that we find in our approach.
Address [Aceti, F.; Bayar, M.; Dias, J. M.; Oset, E.] Univ Valencia, Dept Fis Teor, Valencia 46071, Spain, Email: aceti@ific.uv.es
Corporate Author Thesis
Publisher Springer Place of Publication Editor
Language English Summary Language Original Title
Series Editor Series Title Abbreviated Series Title
Series Volume Series Issue Edition
ISSN (up) 1434-6001 ISBN Medium
Area Expedition Conference
Notes WOS:000338332900001 Approved no
Is ISI yes International Collaboration yes
Call Number IFIC @ pastor @ Serial 1832
Permanent link to this record
 
 
Author Aceti, F.; Dias, J.M.; Oset, E.
Title f(1)(1285) decays into a(0)(980) pi(0), f(0)(980) pi(0) and isospin breaking Type Journal Article
Year 2015 Publication European Physical Journal A Abbreviated Journal Eur. Phys. J. A
Volume 51 Issue 4 Pages 48 - 8pp
Keywords
Abstract We evaluate the decay width for the processes f1(1285). p 0 a0(980) and f1(1285). p 0 f0(980) taking into account that all three resonances are dynamically generated from the meson- meson interaction, the f1(1285) from K* K – c. c. and the a0(980), f0(980) from p., K K and pp, K _ K, respectively. We use a triangular mechanism similar to that of.(1405). pp., which provides a decay width for f1(1285). p 0 a0(980) with a branching fraction of the order of 30%, in agreement with experiment. At the same time we evaluate the decay width for the isospin- forbidden f1(1285). p 0 f0(980), which appears when we consider different masses for the charged and neutral kaons, and show that it is much more suppressed than in the.(1405). pp. case, but gives rise to a narrow shape of the p + p- distribution similar to the one found in the eta(1405) -> pi pi eta decay.
Address [Aceti, F.; Dias, J. M.; Oset, E.] Univ Valencia, Dept Fis Teor, Valencia 46071, Spain, Email: aceti@ific.uv.es
Corporate Author Thesis
Publisher Springer Place of Publication Editor
Language English Summary Language Original Title
Series Editor Series Title Abbreviated Series Title
Series Volume Series Issue Edition
ISSN (up) 1434-6001 ISBN Medium
Area Expedition Conference
Notes WOS:000353789000001 Approved no
Is ISI yes International Collaboration yes
Call Number IFIC @ pastor @ Serial 2216
Permanent link to this record
 
 
Author Dai, L.R.; Dias, J.M.; Oset, E.
Title Disclosing D* (D)over bar* molecular states in the B-c(-) -> pi(-) J/psi omega decay Type Journal Article
Year 2018 Publication European Physical Journal C Abbreviated Journal Eur. Phys. J. C
Volume 78 Issue 3 Pages 210 - 7pp
Keywords
Abstract We study the B-c(-) -> pi(-) J/omega and B-c(-) -> pi(-) D* (D) over bar* reactions and show that they are related by the presence of two resonances, the X(3940) and X(3930), that are of molecular nature and couple most strongly to D* (D) over bar*, but also to J/psi omega. Because of that, in the J/psi omega mass distribution we find a cusp with large strength at the D* (D) over bar* threshold and predict the ratio of strengths between the peak of the cusp and the maximum of the D* (D) over bar* distribution close to D* (D) over bar* threshold, which are distinct features of the molecular nature of these two resonances.
Address [Dai, L. R.] Liaoning Normal Univ, Dept Phys, Dalian 116029, Peoples R China, Email: dailr@lnnu.edu.cn;
Corporate Author Thesis
Publisher Springer Place of Publication Editor
Language English Summary Language Original Title
Series Editor Series Title Abbreviated Series Title
Series Volume Series Issue Edition
ISSN (up) 1434-6044 ISBN Medium
Area Expedition Conference
Notes WOS:000427621300004 Approved no
Is ISI yes International Collaboration yes
Call Number IFIC @ pastor @ Serial 3521
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Author Yu, Q.X.; Dias, J.M.; Liang, W.H.; Oset, E.
Title Molecular Xi(bc) states from meson-baryon interaction Type Journal Article
Year 2019 Publication European Physical Journal C Abbreviated Journal Eur. Phys. J. C
Volume 79 Issue 12 Pages 1025 - 13pp
Keywords
Abstract We have studied the meson-baryon interaction in coupled channels with the same quantum numbers of Xi bc. The interaction is attractive in some channels and of sufficient intensity to lead to bound states or resonances. We use a model describing the meson-baryon interaction based on an extrapolation of the local hidden gauge approach to the heavy sector, which has been successfully used in predicting omega c and hidden charm states. We obtain many states, some of them narrow or with zero width, as a consequence of the interaction, which qualify as molecular states in those channels. The success in related sectors of the picture used should encourage the experimental search for such states.
Address [Yu, Qi-Xin; Dias, J. M.; Liang, Wei-Hong; Oset, E.] Guangxi Normal Univ, Dept Phys, Guilin 541004, Peoples R China, Email: yuqx@mail.bnu.edu.cn;
Corporate Author Thesis
Publisher Springer Place of Publication Editor
Language English Summary Language Original Title
Series Editor Series Title Abbreviated Series Title
Series Volume Series Issue Edition
ISSN (up) 1434-6044 ISBN Medium
Area Expedition Conference
Notes WOS:000503844400002 Approved no
Is ISI yes International Collaboration yes
Call Number IFIC @ pastor @ Serial 4232
Permanent link to this record