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Author Dias, J.M.; Debastiani, V.R.; Xie, J.J.; Oset, E.
Title The radiative decay D-0 -> (K)over-bar*(0)gamma with vector meson dominance Type Journal Article
Year 2018 Publication Chinese Physics C Abbreviated Journal Chin. Phys. C
Volume 42 Issue 4 Pages 043106 - 7pp
Keywords radiative decay; vector meson dominance; local hidden gauge symmetry
Abstract Motivated by the experimental measurements of D-0 radiative decay modes, we have proposed a model to study the D-0 -> (K) over bar*(0)gamma decay, by establishing a link with D-0 -> (K) over bar*(0) V (V = rho(0), omega) decays through the vector meson dominance hypothesis. In order to do this properly, we have used the Lagrangians from the local hidden gauge symmetry approach to account for V gamma conversion. As a result, we have found the branching ratio B[D-0 -> (K) over bar*(0)gamma]=(1.55-3.44)x10(-4), which is in fair agreement with the experimental values reported by the Belle and BaBar collaborations.
Address [Dias, J. M.; Debastiani, V. R.; Xie, Ju-Jun; Oset, E.] Chinese Acad Sci, Inst Modern Phys, Lanzhou 730000, Gansu, Peoples R China, Email: jdias@if.usp.br;
Corporate Author Thesis
Publisher Iop Publishing Ltd Place of Publication Editor
Language English Summary Language Original Title
Series Editor Series Title Abbreviated Series Title
Series Volume Series Issue Edition
ISSN 1674-1137 ISBN Medium
Area Expedition Conference
Notes WOS:000430884300010 Approved no
Is ISI yes International Collaboration yes
Call Number IFIC @ pastor @ Serial 3572
Permanent link to this record
 
 
Author Dote, A.; Bayar, M.; Xiao, C.W.; Hyodo, T.; Oka, M.; Oset, E.
Title A narrow quasi-bound state of the DNN system Type Journal Article
Year 2013 Publication Nuclear Physics A Abbreviated Journal Nucl. Phys. A
Volume 914 Issue Pages 499-504
Keywords Nuclear system with a D meson; Few-body system; Variational calculation; Faddeev calculation
Abstract We have investigated a charmed system of DNN (composed of two nucleons and a D meson) by a complementary study with a variational calculation and a Faddeev calculation with fixed-center approximation (Faddeev-FCA). In the present study, we employ a DN potential based on a vector-meson exchange picture in which a resonant A(c)(2595) is dynamically generated as a DN quasi-bound state, similarly to the A(1405) as a (K) over barN one in the strange sector. As a result of the study of variational calculation with an effective DN potential and three kinds of NN potentials, the DNN(J(pi) =0(-), I = 1/2) is found to be a narrow quasi-bound state below A(c)(2595)N threshold: total binding energy similar to 225 MeV and mesonic decay width similar to 25 MeV. On the other hand, the J(pi) =1(-) state is considered to be a scattering state of A(c)(2595) and a nucleon. These results are essentially supported by the Faddeev-FCA calculation. By the analysis of the variational wave function, we have found a unique structure in the DNN(J(pi) = 0, I = 1/2) such that the D meson stays around the center of the total system due to the heaviness of the D meson.
Address [Dote, A.] High Energy Accelerator Res Org KEK, IPNS, KEK Theory Ctr, Tsukuba, Ibaraki 3050801, Japan, Email: dote@post.kek.jp
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 0375-9474 ISBN Medium
Area Expedition Conference
Notes WOS:000324847700071 Approved no
Is ISI yes International Collaboration yes
Call Number IFIC @ pastor @ Serial 1602
Permanent link to this record
 
 
Author Feijoo, A.; Valcarce Cadenas, V.; Magas, V.K.
Title The Xi(1620) and Xi(1690) molecular states from S =-2 meson-baryon interaction up to next-to-leading order Type Journal Article
Year 2023 Publication Physics Letters B Abbreviated Journal Phys. Lett. B
Volume 841 Issue Pages 137927 - 6pp
Keywords Unitarized chiral perturbation theory; Meson-baryon interaction; Next-to-leading order; Doubly strange baryon
Abstract We have studied the meson-baryon interaction in the neutral S = -2 sector using an extended Unitarized Chiral Perturbation Theory, which takes into account not only the leading Weinberg-Tomozawa term (as all the previous studies in S = -2 sector), but also the Born terms and next-to-leading order contribution. Based on the SU(3) symmetry of the chiral Lagrangian we took most of the model parameters from the BCN model [1], where these were fitted to a large amount of experimental data in the neutral S = -1 sector. We have shown that our approach is able to generate dynamically both Xi(1620) and Xi(1690) states in very reasonable agreement with the data, and can naturally explain the puzzle with the decay branching ratios of Xi(1690). Our results clearly illustrate the reliability of chiral models implementing unitarization in coupled channels and the importance of considering Born and NLO contributions for precise calculations.
Address [Feijoo, A.] Ctr Mixto Univ Valencia CSIC, Inst Invest Paterna, Dept Fis Teor & IFIC, Aptdo 22085, Valencia 46071, Spain, Email: edfeijoo@ific.uv.es
Corporate Author Thesis
Publisher Elsevier Place of Publication Editor
Language English Summary Language Original Title
Series Editor Series Title Abbreviated Series Title
Series Volume Series Issue Edition
ISSN 0370-2693 ISBN Medium
Area Expedition Conference
Notes WOS:000988654200001 Approved no
Is ISI yes International Collaboration no
Call Number IFIC @ pastor @ Serial 5541
Permanent link to this record
 
 
Author Fernandez-Carames, T.; Valcarce, A.; Vijande, J.
Title Doubly charmed exotic mesons: A gift of nature? Type Journal Article
Year 2011 Publication Physics Letters B Abbreviated Journal Phys. Lett. B
Volume 699 Issue 4 Pages 291-295
Keywords Exotic mesons; Quark model; Multiquark states
Abstract We study doubly charmed exotic states by solving the scattering problem of two D mesons. Our results point to the existence of a stable isoscalar doubly charmed meson with quantum numbers (I)J(P) = (0)1(+). We perform a thorough comparison to the results obtained within the hyperspherical harmonic formalism. Such exotic states could be measured at LHC and RHIC. Their experimental observation would, for the first time, confirm the contribution of multiquark structures to hadron spectroscopy.
Address [Carames, T. F.; Valcarce, A.] Univ Salamanca, Dept Fis Fundamental, E-37008 Salamanca, Spain, Email: valcarce@usal.es
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 0370-2693 ISBN Medium
Area Expedition Conference
Notes ISI:000291073200016 Approved no
Is ISI yes International Collaboration no
Call Number IFIC @ elepoucu @ Serial 634
Permanent link to this record
 
 
Author Gonzalez, P.
Title Generalized screened potential model Type Journal Article
Year 2014 Publication Journal of Physics G Abbreviated Journal J. Phys. G
Volume 41 Issue 9 Pages 095001 - 12pp
Keywords quark; meson; potential
Abstract A new non relativistic quark model to calculate the spectrum of heavy quark mesons is developed. The model is based on an interquark potential interaction that implicitly incorporates screening effects from meson-meson configurations. An analysis of the bottomonium spectrum shows the appearance of extra states as compared to conventional non screened potential models.
Address Univ Valencia, CSIC, IFIC, Dept Fis Teor, E-46100 Burjassot, Valencia, Spain, Email: pedro.gonzalez@uv.es
Corporate Author Thesis
Publisher Iop Publishing Ltd Place of Publication Editor
Language English Summary Language Original Title
Series Editor Series Title Abbreviated Series Title
Series Volume Series Issue Edition
ISSN 0954-3899 ISBN Medium
Area Expedition Conference
Notes WOS:000342356400014 Approved no
Is ISI yes International Collaboration no
Call Number IFIC @ pastor @ Serial 1955
Permanent link to this record
 
 
Author Gonzalez, P.
Title A quark model study of strong decays of X(3915) Type Journal Article
Year 2017 Publication Journal of Physics G Abbreviated Journal J. Phys. G
Volume 44 Issue 7 Pages 075004 - 13pp
Keywords quark; meson; potential
Abstract Strong decays of X(3915) are analyzed from two quark model descriptions of X(3915), a conventional one in terms of the Cornell potential and an unconventional one from a generalized screened potential. We conclude that the experimental suppression of the OZI allowed decay X(3915) -> D (D) over bar might be explained in both cases due to the momentum dependence of the decay amplitude. However, the experimental significance of the OZI forbidden decay X(3915) -> omega J/psi could favor an unconventional description.
Address [Gonzalez, P.] Univ Valencia, Dept Fis Teor, CSIC, IFIC, E-46100 Valencia, Spain, Email: pedro.gonzalez@uv.es
Corporate Author Thesis
Publisher Iop Publishing Ltd Place of Publication Editor
Language English Summary Language Original Title
Series Editor Series Title Abbreviated Series Title
Series Volume Series Issue Edition
ISSN 0954-3899 ISBN Medium
Area Expedition Conference
Notes WOS:000402890800001 Approved no
Is ISI yes International Collaboration no
Call Number IFIC @ pastor @ Serial 3158
Permanent link to this record
 
 
Author Li, H.P.; Yi, J.Y.; Xiao, C.W.; Yao, D.L.; Liang, W.H.; Oset, E.
Title Correlation function and the inverse problem in the BD interaction Type Journal Article
Year 2024 Publication Chinese Physics C Abbreviated Journal Chin. Phys. C
Volume 48 Issue 5 Pages 053107 - 7pp
Keywords meson-meson interaction; correlation function; BD system; scattering observables
Abstract We study the correlation functions of the (BD+)-D-0, (B+D0) system, which develops a bound state of approximately 40MeV, using inputs consistent with the T-cc(3875) state. Then, we address the inverse problem starting from these correlation functions to determine the scattering observables related to the system, including the existence of the bound state and its molecular nature. The important output of the approach is the uncertainty with which these observables can be obtained, considering errors in the (BD+)-D-0, (B+D0) correlation functions typical of current values in correlation functions. We find that it is possible to obtain scattering lengths and effective ranges with relatively high precision and the existence of a bound state. Although the pole position is obtained with errors of the order of 50% of the binding energy, the molecular probability of the state is obtained with a very small error of the order of 6%. All these findings serve as motivation to perform such measurements in future runs of high energy hadron collisions.
Address [Li, Hai-Peng; Xiao, Chu-Wen; Liang, Wei-Hong; Oset, Eulogio] Guangxi Normal Univ, Dept Phys, Guilin 541004, Peoples R China, Email: xiaochw@gxnu.edu.cn;
Corporate Author Thesis
Publisher IOP Publishing Ltd Place of Publication Editor
Language English Summary Language Original Title
Series Editor Series Title Abbreviated Series Title
Series Volume Series Issue Edition
ISSN 1674-1137 ISBN Medium
Area Expedition Conference
Notes WOS:001205326100001 Approved no
Is ISI yes International Collaboration yes
Call Number IFIC @ pastor @ Serial 6110
Permanent link to this record
 
 
Author Li, J.T.; Lin, J.X.; Zhang, G.J.; Liang, W.H.; Oset, E.
Title The (B)over-bar(s)(0) -> J/psi pi(0)eta decay and the a(0)(980)- f(0)(980) mixing Type Journal Article
Year 2022 Publication Chinese Physics C Abbreviated Journal Chin. Phys. C
Volume 46 Issue 8 Pages 083108 - 6pp
Keywords strange B meson decay; isospin violation; a(0)(980)-f(0)(980) mixing; hadronic structure
Abstract We study the (B) over bar (0)(s) -> J/psi f(0)(980) and (B) over bar (0)(s) -> J/psi a(0)(980) reactions, and pay attention to the different sources of isospin violation and mixing of f(0)(980) and a(0)(980) resonances where these resonances are dynamically generated from meson-meson interactions. We fmd that the main cause of isospin violation is isospin breaking in the meson-meson transition T matrices, and the other source is that the loops involving kaons in the production mechanism do not cancel due to the different masses of charged and neutral kaons. We obtain a branching ratio for a(0)(980) production of the order of 5 x 10(-6) . Future experiments can address this problem, and the production rate and shape of the pi(0)eta mass distribution will definitely help to better understand the nature of scalar resonances.
Address [Li, Jia-Ting; Lin, Jia-Xin; Zhang, Gong-Jie; Liang, Wei-Hong; Oset, E.] Guangxi Normal Univ, Dept Phys, Guilin 541004, Peoples R China, Email: liangwh@gxnu.edu.cn;
Corporate Author Thesis
Publisher IOP Publishing Ltd Place of Publication Editor
Language English Summary Language Original Title
Series Editor Series Title Abbreviated Series Title
Series Volume Series Issue Edition
ISSN 1674-1137 ISBN Medium
Area Expedition Conference
Notes WOS:000829561600001 Approved no
Is ISI yes International Collaboration yes
Call Number IFIC @ pastor @ Serial 5306
Permanent link to this record
 
 
Author Liang, W.H.; Sakai, S.; Xie, J.J.; Oset, E.
Title Triangle singularity enhancing isospin violation in (B)over-bar(s)(0)-> J/psi pi(0)f(0)(980) Type Journal Article
Year 2018 Publication Chinese Physics C Abbreviated Journal Chin. Phys. C
Volume 42 Issue 4 Pages 044101 - 9pp
Keywords triangle singularity; light scalar meson; isospin violation; bottom meson decay
Abstract We perform calculations for the (B) over bar (0)(s)-> J/psi pi(0)f(0)(980) and (B) over bar (0)(s)-> J/psi pi(0)a(0)(980) reactions, showing that the first is isospin-suppressed while the second is isospin-allowed. The reaction proceeds via a triangle mechanism, with (B) over bar (0)(s)-> J/psi K*(K) over bar +c.c., followed by the decay K*-> K pi and a further fusion of K (K) over bar into the f(0)(980) or a(0)(980). We show that the mechanism develops a singularity around the pi(0)f(0)(980) or pi(0)a(0)(980) invariant mass of 1420 MeV, where the pi(0)f(0) and pi(0)a(0) decay modes are magnified and also the ratio of pi(0)f(0) to pi(0)a(0) production. Using experimental information for the (B) over bar (0)(s)-> J/psi K*(K) over bar +c.c. decay, we are able to obtain absolute values for the reactions studied which fall into the experimentally accessible range. The reactions proposed and the observables evaluated, when contrasted with actual experiments, should be very valuable to obtain information on the nature of the low lying scalar mesons.
Address [Liang, Wei-Hong] Guangxi Normal Univ, Dept Phys, Guilin 541004, Peoples R China, Email: liangwh@gxnu.edu.cn;
Corporate Author Thesis
Publisher Iop Publishing Ltd Place of Publication Editor
Language English Summary Language Original Title
Series Editor Series Title Abbreviated Series Title
Series Volume Series Issue Edition
ISSN 1674-1137 ISBN Medium
Area Expedition Conference
Notes WOS:000430884300013 Approved no
Is ISI yes International Collaboration yes
Call Number IFIC @ pastor @ Serial 3573
Permanent link to this record
 
 
Author Mathieu, V.; Vento, V.
Title eta-eta ' mixing in the flavor basis and large N Type Journal Article
Year 2010 Publication Physics Letters B Abbreviated Journal Phys. Lett. B
Volume 688 Issue 4-5 Pages 314-318
Keywords Meson; Mixing
Abstract The mass matrix for eta-eta' is derived in the flavor basis at O(p(4)) of the chiral Lagrangian using the large N approximation. Under certain assumptions, the mixing angle phi = 41.4 degrees and the decay constants ratio f(K)/f(pi) = 1.15 are calculated in agreement with the data. It appears that the FKS scheme arises as a special limit of the chiral Lagrangian. Their mass matrix is obtained without the hypothesis on the mixing pattern of the decay constants.
Address [Mathieu, Vincent] Univ Valencia, Dept Fis Teor, CSIC, E-46100 Valencia, Spain, Email: vincent.mathieu@umons.ac.be
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 0370-2693 ISBN Medium
Area Expedition Conference
Notes ISI:000278242600012 Approved no
Is ISI yes International Collaboration no
Call Number IFIC @ elepoucu @ Serial 428
Permanent link to this record