Geng, L. S., Guo, F. K., Hanhart, C., Molina, R., Oset, E., Zou, B. S.
In this paper we present an approach to study the radiative decay modes of the $J/\psi$ into a photon and one of the tensor mesons $f_2(1270)$, $f'_2(1525)$, as well as the scalar ones $f_0(1370)$...
Further evidence for the $\Sigma^{*}$ resonance with $J^P=1/2^-$ around 1380 MeV (2009)
Wu, Jia-Jun, Dulat, S., Zou, B. S.
The unquenched quark models predict the new particle $\Sigma^*$ with spin parity $J^P=1/2^-$ and its mass is around the well established $\Sigma^*(1385)$ with $J^P=3/2^+$. Here by using the effective...
Complementary studies on $N^*$ from $e^+e^-$, $pp$ and $p\bar p$ collisions (2009)
Complementary to the conventional experimental studies on $N^*$ from $\pi N$ and $\gamma^{(*)}N$ reactions, the $e^+e^-$, $pp$ and $p\bar p$ collisions can give novel insights into these $N^*$...
Theory Support for the Excited Baryon Program at the Jlab 12 GeV Upgrade (2009)
Aznauryan, I., Braun, V., Burkert, V., Capstick, S., Edwards, R., Cloet, I. C., ...
This document outlines major directions in theoretical support for the measurement of nucleon resonance transition form factors at the JLab 12 GeV upgrade with the CLAS12 detector. Using single and...
Wu, Jia-Jun, Dulat, S., Zou, B. S.
Distinctive patterns are predicted by quenched quark models and unquenched quark models for the lowest SU(3) baryon nonet with spin parity $J^P=1/2^-$. While the quenched quark models predict the...
Torres, A. Martinez, Geng, L. S., Dai, L. R., Sun, Bao Xi, Oset, E., Zou, B. S.
We present an approach to study the decay modes of the $J/\psi$ into a vector meson and a tensor meson, taking into account the nature of the $f_2(1270)$, $f'_2(1525)$, $\bar{K}^{* 0}_2(1430)$...
Gamermann, D., Oset, E., Zou, B. S.
In this work we present our model that dynamically generates resonances from charmed and light pseudoscalar and vector mesons. The model generates a rich spectrum of charmed and hidden charm scalar...
The radiative decay of psi(3770) into the predicted scalar state X(3700) (2009)
Gamermann, Daniel, Oset, Eulogi, Zou, B.S.
5 pages, 1 figure.-- ISI article identifier:000267299600009.-- ArXiv pre-print avaible at:http://arxiv.org/abs/0805.0499
Proposal for Studying $N^*$ Resonances with $\bar{p}p \to \bar{p}n \pi^+ $ Reaction (2009)
Wu, Jia-Jun, Ouyang, Zhen, Zou, B. S.
A theoretical study of $\bar{p}p \to \bar{p}n \pi^+ $ reaction for anti-proton beam energy from 1 to 4 GeV is made by including contributions from various known $N^*$ and $\Delta^*$ resonances. It is...
Role of the N-*(1535) in the J/psi -> pp and J/psi -> p(+)Lambda reactions (2009)
Geng, L.S., Oset, Eulogi, Zou, B.S., Döring, M.
We study the J/psi -> p eta p and J/psi -> pK(+)Lambda reactions with a unitary chiral approach. We find that the unitary chiral approach, which generates the N-*(1535) dynamically, can describe the...
Theoretical study on pp --> p n pi+ reaction at medium energies (2009)
Ouyang, Z., Xie, J. J., Zou, B. S., Xu, H. S.
The $pp\to p n \pi^+$ reaction is a channel with the largest total cross section for pp collision in COSY/CSR energy region. In this work, we investigate individual contributions from various $N^*$...
Asner, D. M., Barnes, T., Bian, J. M., Bigi, I. I., Brambilla, N., Boyko, I. R., ...
This physics book provides detailed discussions on important topics in $\tau$-charm physics that will be explored during the next few years at \bes3 . Both theoretical and experimental issues are...
Study a0(980)-f0(980) mixing from a0(980) -> f0(980) transition (2008)
Various processes have been proposed previously to study a0(980)-f0(980) mixing through f0(980)->a0(980) transition. Here we investigate in detail the difference between a0(980)->f0(980) and...
Geng, L. S., Oset, E., Zou, B. S.
We study the reactions $J/\psi\to\bar{\Lambda}K^-p$ and $J/\psi\to\bar{\Lambda}\pi^+\pi^-\Lambda$ with a unitary chiral approach. We predict the ratio of the invariant mass distributions of these two...
Geng, L. S., Oset, E., Zou, B. S., Döring, M.
We study the $J/\psi\to \bar{p}\eta p$ and $J/\psi\to \bar{p}K^+\Lambda$ reactions with a unitary chiral approach. We find that the unitary chiral approach, which generates the $N^*(1535)$...
Döring, M., Oset, E., Zou, B. S.
We study the pi N --> phi N reaction close to the phi N threshold within the chiral unitary approach, by combining the pi^- p --> K^+ Sigma^-, pi^- p --> K^0 Sigma^0 and pi^- p --> K^0 Lambda...
$0^{++}$ Resonances Observed at BES (2008)
Zou, B. S., Collaboration, For BES
In last 10 years, $0^{++}$ resonances have been observed and studied at BES in many processes, such as $J/\psi\to\gamma\pi^+\pi^-\pi^+\pi^-$, $\gamma\pi^+\pi^-$, $\gamma\pi^0\pi^0$, $\gamma K^+K^-$,...
On the role of meson loops in the $f_0(1710)$ decay into $V\gamma$ (2008)
Nagahiro, H., Roca, L., Oset, E., Zou, B. S.
We investigate the relevance of the meson loops in the $f_0(1710)$ scalar meson decay into one photon and one vector meson, ($\rho$, $\omega$ and $\phi$). In particular we estimate the size of the...
The helicity amplitudes $A^{p}_{1/2}$ and $S^{p}_{1/2}$ for the electromagnetic transition $\gamma^{*} N\to N^{*}(1535)$ are calculated in the quark model that is extended to include the lowest lying...
Baryon Resonances Observed at BES (2008)
The $\psi$ decays provide a novel way to explore baryon spectroscopy and baryon structure. The baryon resonances observed from $\psi$ decays at BES are reviewed. The implications and prospects at...
On the nature of the lowest $1/2^-$ baryon nonet and decuplet (2007)
From recent study of properties of the lowest spin-parity $1/2^-$ baryons, $N^*(1535)$ and $\Delta^*(1620)$, new pictures for the internal structure of the lowest $1/2^-$ baryon octet and decuplet...
A New Analysis of the Radiative Decay (2007)
K. M. Crowe, F. H. Heinsius, P. Kammel, M. Lakata, T. Degener, ...
We report on a measurement of the branching ratio of the rare decay #### relative to the well known decay ### 0 #. The #'s are produced in pp### and pp## 0 #. Eigenstate mixing and interference...
J. Adomeit, B. Kammle, J. Meier, P. Schmidt, R. Seibert, U. Strohbusch (2007)
A. Abele, S. Bischoff, P. Blum, N. Djaoshvili, D. Engelhardt, ...
We present a measurement and partial wave analysis of the final state KLK \Sigma ß \Upsilon of ¯ pp annihilation at rest in liquid hydrogen. This reaction is important for the study of the ¯ KK...
The s-s(bar) asymmetry in nucleon and "NuTeV anomaly" (2007)
The $s$-$\bar{s}$ asymmetry in nucleon sea is an important observable for understanding nucleon structure and strong interaction. There have been many theoretical attempts on this subject and...
The role of $N^*(1535)$ in $pp \to pp \phi$ and $\pi^- p \to n \phi$ reactions (2007)
Xie, J. J., Zou, B. S., Chiang, H. C.
The near threshold $\phi$ meson production in proton-proton and $\pi^- p$ collisions is studied with the assumption that the production mechanism is due to the sub-$N\phi$-threshold $N^*(1535)$...
Possibility of measuring a0(980)-f0(980) mixing from J/psi -> phi a0 (2007)
Wu, Jia-Jun, Zhao, Qiang, Zou, B. S.
The a0(980)-f0(980) mixing intensity has been predicted to be in the range of 0.01 to 0.1 by various theoretical models, but lacking firm experimental observation. We examine the possibility of...
The $pp \to nK^+\Sigma^+$ reaction is a very good isospin 3/2 filter for studying $\Delta^{++*}$ decaying to $K^+\Sigma^+$. With an effective Lagrangian approach, contributions from a previous...
Reply to Comment on "Mass and K-Lambda Coupling of the N*(1535)" (2006)
Here we give our reply to the comment by Sibirtsev et al on our paper ``Mass and K-Lambda Coupling of the N*(1535)".
Strangeness in the proton and N*(1535) (2006)
The newest progress on the study of the strangeness in the proton and in the lowest negative parity nucleon excited state $N^*(1535)$ is reviewed. Implications on the internal quark structure of the...
The $qqqq\bar q$ components and hidden flavor contributions to the baryon magnetic moments (2006)
An, C. S., Li, Q. B., Riska, D. O., Zou, B. S.
The contributions from the $qqqq\bar q$ components to the magnetic moments of the octet as well as the $\Delta^{++}$ and $\Omega^-$ decuplet baryons are calculated for the configurations that are...
Subthreshold rho contribution in J/psi decay to omega pion pion and Kaon anti-Kaon pion (2006)
We carry out a theoretical and Monte Carlo study on the $J/\psi$ decays into $\omega\pi\pi$ and $K\bar{K}\pi$ through intermediate subthreshold $\rho$ meson by using SU(3)-symmetric Lagrangian...
Study of K anti-K resonances in anti-p p ---> K+ K- pi0 at 900-MeV/c and 1640-MeV/c (2006)
Crystal Barrel Collaboration, Amsler, C., Baker, C. A., Barnett, B. M., Batty, C. J., Benayoun, M., ...
ProminentK ¯ K resonances observed in the in-flight annihilation of ¯ pp intoK+K−π0 include f2(1270), f0(1500), f 2 (1525), φ(1680)/ρ(1700) and a state at 1750 MeV/c2...
Strangeness spin, magnetic moment and strangeness configurations of the proton (2005)
An, C. S., Zou, B. S., Riska, D. O.
The implications of the empirical signatures for the positivity of the strangeness magnetic moment $\mu_s$, and the negativity of the strangeness contribution to the proton spin $\Delta_s$, on the...
For the Nbar N system, the one-pion-exchange (OPE) interaction gives the largest attractive force for Nbar N with isospin I=0 and spin S=0, while a near threshold enhancement was observed for pbar p...
New study of the isotensor pi-pi interaction (2003)
Wu, F. Q., Zou, B. S., Li, L., Bugg, D. V.
With t-channel rho, f2(1270) exchange and the pi pi -> rho rho -> pi pi box diagram contribution, we reproduce the pi pi isotensor S-wave and D-wave scattering phase shifts and inelasticities up to...