
Records 
Links 

Author 
YamagataSekihara, J.; Roca, L.; Oset, E. 


Title 
Nature of the K2*(1430), K3*(1780), K4*(2045), K5*(2380), and K6* as K*multirho states 
Type 
Journal Article 

Year 
2010 
Publication 
Physical Review D 
Abbreviated Journal 
Phys. Rev. D 


Volume 
82 
Issue 
9 
Pages 
094017  8pp 


Keywords 



Abstract 
We show that the K2*(1430), K3*(1780), K4*(2045), K5*(2380), and a notyetdiscovered K6* resonance are basically molecules made of an increasing number of rho(770) and one K*(892) mesons. The idea relies on the fact that the vectorvector interaction in the s wave with spins aligned is very strong for both rho rho and K*rho. We extend a recent work, where several resonances showed up as multirho(770) molecules, to the strange sector including the K*(892) into the system. The resonant structures show up in the multibody scattering amplitudes, which are evaluated in terms of the unitary twobody vectorvector scattering amplitudes by using the fixed center approximation to the Faddeev equations. 


Address 
[YamagataSekihara, J.; Oset, E.] Univ Valencia, CSIC, Dept Fis Teor IFIC, Ctr Mixto,Inst Invest Paterna, Valencia 46071, Spain 


Corporate Author 

Thesis 



Publisher 
Amer Physical Soc 
Place of Publication 

Editor 



Language 
English 
Summary Language 

Original Title 



Series Editor 

Series Title 

Abbreviated Series Title 



Series Volume 

Series Issue 

Edition 



ISSN 
15507998 
ISBN 

Medium 



Area 

Expedition 

Conference 



Notes 
ISI:000284206500003 
Approved 
no 


Is ISI 
yes 
International Collaboration 
no 


Call Number 
IFIC @ elepoucu @ 
Serial 
323 

Permanent link to this record 




Author 
Wang, G.Y.; Roca, L.; Wang, E.; Liang, W.H.; Oset, E. 


Title 
Signatures of the two K1(1270) poles in D – plus ve plus V P decay 
Type 
Journal Article 

Year 
2020 
Publication 
European Physical Journal C 
Abbreviated Journal 
Eur. Phys. J. C 


Volume 
80 
Issue 
5 
Pages 
388  7pp 


Keywords 



Abstract 
We analyze theoretically the D+ ye+ pK and D+ pe+ K*7 decays to see the feasibility to check the double pole nature of the axial vector resonance Kt(1270) predicted by the unitary extensions of chiral perturbation theory (UChPT). Indeed, within UChPT the K1(1270) is dynamically generated from the interaction of a vector and a pseudoscalar meson, and two poles are obtained for the quantum numbers of this resonance. The lower mass pole couples dominantly to 10 and the higher mass pole to pK, therefore we can expect that different reactions weighing differently these channels in the production mechanisms enhance one or the other pole. We show that the different final V P channels in D pe+ V P weigh differently both poles, and this is reflected in the shape of the final vectorpseudoscalar invariant mass distributions. Therefore, we conclude that these decays are suitable to distinguish experimentally the predicted double pole of the Kt(1270) resonance. 


Address 
[Wang, GuanYing; Wang, En; Liang, WeiHong; Oset, Eulogio] Guangxi Normal Univ, Dept Phys, Guilin 541004, Peoples R China, Email: luisroca@um.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 
14346044 
ISBN 

Medium 



Area 

Expedition 

Conference 



Notes 
WOS:000536131900008 
Approved 
no 


Is ISI 
yes 
International Collaboration 
yes 


Call Number 
IFIC @ pastor @ 
Serial 
4412 

Permanent link to this record 




Author 
Wang, G.Y.; Roca, L.; Oset, E. 


Title 
Discerning the two K1 (1270) poles in D0 > pi(+) VP decay 
Type 
Journal Article 

Year 
2019 
Publication 
Physical Review D 
Abbreviated Journal 
Phys. Rev. D 


Volume 
100 
Issue 
7 
Pages 
074018  10pp 


Keywords 



Abstract 
Within the chiral unitary approach, the axialvector resonance K1 (1270) has been predicted to manifest a twopole nature. The lowest pole has a mass of 1195 MeV and a width of 246 MeV and couples mostly to K*pi, and the highest pole has a mass of 1284 MeV and a width of 146 MeV and couples mostly to rho K. We analyze theoretically how this doublepole structure can show up in D0 > pi+VP decays by looking at the vectorpseudoscalar (VP) invariant mass distribution for different VP channels, exploiting the fact that each pole couples differently to different VP pairs. We find that the final (K) over bar*pi and rho(K) over tilde channels are sensible to the different poles of the K1 (1270) resonance and hence are suitable reactions to analyze experimentally the doublepole nature of this resonance. 


Address 
[Wang, G. Y.] Zhengzhou Univ, Sch Phys, Zhengzhou 450001, Henan, Peoples R China 


Corporate Author 

Thesis 



Publisher 
Amer Physical Soc 
Place of Publication 

Editor 



Language 
English 
Summary Language 

Original Title 



Series Editor 

Series Title 

Abbreviated Series Title 



Series Volume 

Series Issue 

Edition 



ISSN 
24700010 
ISBN 

Medium 



Area 

Expedition 

Conference 



Notes 
WOS:000490752100003 
Approved 
no 


Is ISI 
yes 
International Collaboration 
yes 


Call Number 
IFIC @ pastor @ 
Serial 
4182 

Permanent link to this record 




Author 
Sakai, S.; Roca, L.; Oset, E. 


Title 
Charmbeauty meson bound states from B (B*)D(D*) and interaction B (B*)(D)overbar((D)overbar*) 
Type 
Journal Article 

Year 
2017 
Publication 
Physical Review D 
Abbreviated Journal 
Phys. Rev. D 


Volume 
96 
Issue 
5 
Pages 
054023  9pp 


Keywords 



Abstract 
We evaluate the swave interaction of pseudoscalar and vector mesons with both charm and beauty to investigate the possible existence of molecular BD, B* D, BD*, B* D*, B (D) over bar, B* (D) over bar, B (D) over bar*, or B* (D) over bar* meson states. The scattering amplitude is obtained implementing unitarity starting from a tree level potential accounting for the dominant vector meson exchange. The diagrams are evaluated using suitable extensions to the heavy flavor sector of the hidden gauge symmetry Lagrangians involving vector and pseudoscalar mesons, respecting heavy quark spin symmetry. We obtain bound states at energies above 7 GeV for BD (J(P) = 0(+)), B* D (1(+)), BD* (1(+)), and B* D* (0(+), 1(+,) 2(+)), all in isospin 0. For B (D) over bar (0(+)), B* (D) over bar (1(+)), B (D) over bar* (1(+)), and B* (D) over bar* (0(+), 1(+), 2(+)) we also find similar bound states in I = 0, but much less bound, which would correspond to exotic meson states with _ (b) over bar and (c) over bar quarks, and for the I = 1 we find a repulsive interaction. We also evaluate the scattering lengths in all cases, which can be tested in current investigations of lattice QCD. 


Address 
[Sakai, S.; Oset, E.] Univ Valencia, CSIC, Inst Invest Paterna, Dept Fis Teor,Ctr Mixto, Aptdo 22085, Valencia 46071, Spain 


Corporate Author 

Thesis 



Publisher 
Amer Physical Soc 
Place of Publication 

Editor 



Language 
English 
Summary Language 

Original Title 



Series Editor 

Series Title 

Abbreviated Series Title 



Series Volume 

Series Issue 

Edition 



ISSN 
24700010 
ISBN 

Medium 



Area 

Expedition 

Conference 



Notes 
WOS:000411579700002 
Approved 
no 


Is ISI 
yes 
International Collaboration 
no 


Call Number 
IFIC @ pastor @ 
Serial 
3318 

Permanent link to this record 




Author 
Roca, L.; Song, J.; Oset, E. 


Title 
Molecular pentaquarks with hidden charm and double strangeness 
Type 
Journal Article 

Year 
2024 
Publication 
Physical Review D 
Abbreviated Journal 
Phys. Rev. D 


Volume 
109 
Issue 
9 
Pages 
094005  8pp 


Keywords 



Abstract 
We analyze theoretically the coupledchannel mesonbaryon interaction with global flavor c<overline>cssn and c<overline>csss, where mesons are pseudoscalars or vectors, and baryons have JP = 1/2+ or 3/2+. The aim is to explore whether the nonlinear dynamics inherent in the unitarization process within coupled channels can dynamically generate double and triplestrange pentaquarktype states (Pcss and Pcsss, respectively), for which there is no experimental evidence to date. We evaluate the swave scattering matrix by implementing unitarity in coupled channels, using potential kernels obtained from tchannel vector meson exchange. The required PPV and VVV vertices are obtained from Lagrangians derived through appropriate extensions of the local hidden gauge symmetry approach to the charm sector, while capitalizing on the symmetry of the spin and flavor wave function to evaluate the BBV vertex. We find four different poles in the double strange sector, some of them degenerate in spin. For the triplestrange channel, we find the mesonbaryon interaction insufficient to generate a bound or resonance state through the unitary coupledchannel dynamics. 


Address 
[Roca, L.] Univ Murcia, Dept Fis, E30100 Murcia, Spain, Email: luisroca@um.es; 


Corporate Author 

Thesis 



Publisher 
Amer Physical Soc 
Place of Publication 

Editor 



Language 
English 
Summary Language 

Original Title 



Series Editor 

Series Title 

Abbreviated Series Title 



Series Volume 

Series Issue 

Edition 



ISSN 
24700010 
ISBN 

Medium 



Area 

Expedition 

Conference 



Notes 
WOS:001224715500002 
Approved 
no 


Is ISI 
yes 
International Collaboration 
yes 


Call Number 
IFIC @ pastor @ 
Serial 
6135 

Permanent link to this record 




Author 
Roca, L.; Oset, E. 


Title 
Description of the f(2)(1270), rho(3)(1690), f(4)(2050), rho(5)(2350), f(6)(2510) resonances as multirho(770) states 
Type 
Journal Article 

Year 
2010 
Publication 
Physical Review D 
Abbreviated Journal 
Phys. Rev. D 


Volume 
82 
Issue 
5 
Pages 
054013  11pp 


Keywords 



Abstract 
In a previous work regarding the interaction of two rho(770) resonances, the f(2)(1270) (J(PC) = 2(++)) resonance was obtained dynamically as a tworho molecule with a very strong binding energy, 135 MeV per rho particle. In the present work we use the rho rho interaction in spin 2 and isospin 0 channel to show that the resonances rho(3)(1690) (3()), f(4)(2050) (4(++)), rho(5)(2350) (5()), and f(6)(2510) (6(++)) are basically molecules of increasing number of rho(770) particles. We use the fixed center approximation of the Faddeev equations to write the multibody interaction in terms of the twobody scattering amplitudes. We find the masses of the states very close to the experimental values and we get an increasing value of the binding energy per rho as the number of rho mesons is increased. 


Address 
[Roca, L.] Univ Murcia, Dept Fis, E30071 Murcia, Spain 


Corporate Author 

Thesis 



Publisher 
Amer Physical Soc 
Place of Publication 

Editor 



Language 
English 
Summary Language 

Original Title 



Series Editor 

Series Title 

Abbreviated Series Title 



Series Volume 

Series Issue 

Edition 



ISSN 
15507998 
ISBN 

Medium 



Area 

Expedition 

Conference 



Notes 
ISI:000281791100002 
Approved 
no 


Is ISI 
yes 
International Collaboration 
no 


Call Number 
IFIC @ elepoucu @ 
Serial 
381 

Permanent link to this record 




Author 
Roca, L.; Oset, E. 


Title 
Asymmetry observables in e(+)e() > pi(+) pi() gamma in the phi region within a chiral unitary approach 
Type 
Journal Article 

Year 
2010 
Publication 
Physical Review D 
Abbreviated Journal 
Phys. Rev. D 


Volume 
81 
Issue 
1 
Pages 
014010  8pp 


Keywords 



Abstract 
We make a theoretical study of the charge and forwardbackward pion asymmetries in the e(+)e() > pi(+) pi() gamma process on and off the phi resonance energy. These observables are rather sensitive to the inner details of the theoretical models to describe the reaction. In addition to the standard implementation of the initial state radiation and the bremsstrahlung contribution to the final state radiation, we use the techniques of the chiral unitary approach to evaluate the contribution from the mechanisms of phi decay into pi(+) pi() gamma. This contribution involves the implementation of final state interaction from direct chiral loops, the exchange of vector and axialvector resonances and the final state interaction through the consideration of the mesonmeson unitarized amplitudes, which were found important in a previous work describing the phi > pi pi gamma. We find a good reproduction of the experimental data from KLOE for the forwardbackward asymmetry, both at the phi peak and away from it. We also make predictions for the angular distributions of the charge asymmetry and show that this observable is very sensitive to the chiral loops involved in phi radiative decay. 


Address 
[Roca, L.] Univ Murcia, Dept Fis, E30071 Murcia, Spain 


Corporate Author 

Thesis 



Publisher 
Amer Physical Soc 
Place of Publication 

Editor 



Language 
English 
Summary Language 

Original Title 



Series Editor 

Series Title 

Abbreviated Series Title 



Series Volume 

Series Issue 

Edition 



ISSN 
15507998 
ISBN 

Medium 



Area 

Expedition 

Conference 



Notes 
ISI:000274002800021 
Approved 
no 


Is ISI 
yes 
International Collaboration 
no 


Call Number 
IFIC @ elepoucu @ 
Serial 
503 

Permanent link to this record 




Author 
Roca, L.; Oset, E. 


Title 
Scattering of unstable particles in a finite volume: The case of pi rho scattering and the a(1)(1260) resonance 
Type 
Journal Article 

Year 
2012 
Publication 
Physical Review D 
Abbreviated Journal 
Phys. Rev. D 


Volume 
85 
Issue 
5 
Pages 
054507  13pp 


Keywords 



Abstract 
We present a way to evaluate the scattering of unstable particles quantized in a finite volume with the aim of extracting physical observables for infinite volume from lattice data. We illustrate the method with the pi rho scattering which generates dynamically the axialvector a(1)(1260) resonance. Energy levels in a finite box are evaluated both considering the rho as a stable and unstable resonance and we find significant differences between both cases. We discuss how to solve the problem to get the physical scattering amplitudes in the infinite volume, and hence phase shifts, from possible lattice results on energy levels quantized inside a finite box. 


Address 
[Roca, L.] Univ Murcia, Dept Fis, E30071 Murcia, Spain 


Corporate Author 

Thesis 



Publisher 
Amer Physical Soc 
Place of Publication 

Editor 



Language 
English 
Summary Language 

Original Title 



Series Editor 

Series Title 

Abbreviated Series Title 



Series Volume 

Series Issue 

Edition 



ISSN 
15507998 
ISBN 

Medium 



Area 

Expedition 

Conference 



Notes 
WOS:000301706700004 
Approved 
no 


Is ISI 
yes 
International Collaboration 
no 


Call Number 
IFIC @ pastor @ 
Serial 
941 

Permanent link to this record 




Author 
Roca, L.; Oset, E. 


Title 
Lambda(1405) poles obtained from pi(0)Sigma(0) photoproduction data 
Type 
Journal Article 

Year 
2013 
Publication 
Physical Review C 
Abbreviated Journal 
Phys. Rev. C 


Volume 
87 
Issue 
5 
Pages 
055201  8pp 


Keywords 



Abstract 
We present a strategy to extract the position of the two Lambda(1405) poles from experimental photoproduction data measured recently at different energies in the gamma p > K+pi(0)Sigma(0) reaction at Jefferson Laboratory. By means of a chiral dynamics motivated potential with free parameters, we solve the BetheSalpeter equation in the coupled channels (K) over barN and pi Sigma in isospin I = 0 and parametrize the amplitude for the photonuclear reaction in terms of a linear combination of the pi Sigma > pi Sigma and (K) over barN > pi Sigma scattering amplitudes in I = 0, with a different linear combination for each energy. Good fits to the data are obtained with some sets of parameters, by means of which one can also predict the cross section for the K p > pi(0)Sigma(0) reaction. These later results help us decide among the possible solutions. The result is that the different solutions lead to two poles similar to those found in the chiral unitary approach. With the best result we find the two Lambda(1405) poles at 1385 – 68i MeV and 1419 – 22i MeV. 


Address 
Univ Murcia, Dept Fis, E30100 Murcia, Spain 


Corporate Author 

Thesis 



Publisher 
Amer Physical Soc 
Place of Publication 

Editor 



Language 
English 
Summary Language 

Original Title 



Series Editor 

Series Title 

Abbreviated Series Title 



Series Volume 

Series Issue 

Edition 



ISSN 
05562813 
ISBN 

Medium 



Area 

Expedition 

Conference 



Notes 
WOS:000318527400004 
Approved 
no 


Is ISI 
yes 
International Collaboration 
no 


Call Number 
IFIC @ pastor @ 
Serial 
1442 

Permanent link to this record 




Author 
Roca, L.; Oset, E. 


Title 
Isospin 0 and 1 resonances from pi Sigma photoproduction data 
Type 
Journal Article 

Year 
2013 
Publication 
Physical Review C 
Abbreviated Journal 
Phys. Rev. C 


Volume 
88 
Issue 
5 
Pages 
055206  7pp 


Keywords 



Abstract 
Recently we presented a successful strategy to extract the position of the two Lambda ( 1405) poles from experimental photoproduction data on the gamma p > K+pi(0)Sigma(0) reaction at Jefferson Lab. Following a similar strategy, we extend the previous method to incorporate also the isospin 1 component which allows us to consider in addition the experimental data on gamma p > K+pi(+/)Sigma(/+). The idea is based on considering a production mechanism as model independent as possible and implementing the final state interaction of the final mesonbaryon pair based on small modifications of the unitary chiral perturbation theory amplitudes. Good fits to the data are obtained with this procedure, by means of which we can also predict the cross sections for the K p > (K) over barN, pi Sigma, and pi Lambda reactions for the different charge channels. Besides the two poles found for the Lambda(1405) resonance, we discuss the possible existence of an isospin 1 resonance in the vicinity of the (K) over barN threshold. 


Address 
[Roca, L.] Univ Murcia, Dept Fis, E30100 Murcia, Spain 


Corporate Author 

Thesis 



Publisher 
Amer Physical Soc 
Place of Publication 

Editor 



Language 
English 
Summary Language 

Original Title 



Series Editor 

Series Title 

Abbreviated Series Title 



Series Volume 

Series Issue 

Edition 



ISSN 
05562813 
ISBN 

Medium 



Area 

Expedition 

Conference 



Notes 
WOS:000327315800008 
Approved 
no 


Is ISI 
yes 
International Collaboration 
no 


Call Number 
IFIC @ pastor @ 
Serial 
1655 

Permanent link to this record 