Results 31 to 40 of about 269,743 (379)

Towards a new paradigm for heavy-light meson spectroscopy [PDF]

Physical Review D, 2017
Understanding the hadron spectrum is one of the premier challenges in particle physics. For a long time, the quark model has served as an ordering scheme and brought systematics into the hadron zoo. However, many new hadrons that were observed since 2003,
Meng-Lin Du, M. Albaladejo, P. Fernandez-Soler, F. Guo, C. Hanhart, U. Meissner, J. Nieves, D. Yao   +7 more
semanticscholar   +1 more source

Inversion potentials for meson-nucleon and meson-meson interactions [PDF]

, 1997
Contribution to the International Conference on Inverse and Algebraic Scattering Theory, Lake Balaton '96, to appear in Springer LNP, 22 pages RevTeX, incl. 7 figures (needs epsfig)
Sander, M., von Geramb, H. V.
openaire   +2 more sources

Meson exchange model for pseudoscalar meson-meson scattering [PDF]

Nuclear Physics A, 1990
A dynamical model for pseudoscalar-pseudoscalar meson scattering based on meson exchange, suitable for use in a variety of low- and intermediate-energy mesonic interactions, has been constructed and applied to ππ and kπ scattering with good quantitative results.
Lohse, Detlef, Durso, J.W., Holinde, K., Speth, J.   +3 more
openaire   +1 more source

Minimal flavored U (1') for B -meson anomalies [PDF]

, 2017
We consider an anomaly-free $U(1)'$ model with favorable couplings to heavy flavors in the Standard Model(SM), as motivated by $B$-meson anomalies at LHCb.
Ligong Bian, Sookyung Choi, Yoo-Jin Kang, Hyun Min Lee   +3 more
semanticscholar   +1 more source

Excited and exotic charmonium, Ds and D meson spectra for two light quark masses from lattice QCD [PDF]

Journal of High Energy Physics, 2016
We present highly-excited charmonium, Ds and D meson spectra from dynamical lattice QCD calculations with light quarks corresponding to Mπ ∼ 240 MeV and compare these to previous results with Mπ ∼ 400 MeV.
G. Cheung, Cian O'hara, Graham Moir, M. Peardon, S. Ryan, Christopher E. Thomas, David Tims, F. C. Collaboration   +7 more
semanticscholar   +1 more source

Vector meson dominance and the ρ meson [PDF]

Physical Review D, 1999
We discuss the properties of vector mesons, in particular the rho^0, in the context of the Hidden Local Symmetry (HLS) model. This provides a unified framework to study several aspects of the low energy QCD sector. Firstly, we show that in the HLS model the physical photon is massless, without requiring off field diagonalization.
Benayoun, M., O'Connell, H B., Williams, a G.   +2 more
openaire   +3 more sources

$\eta \to \pi^0 \gamma \gamma$ decay within unitarized chiral perturbation theory [PDF]

, 2002
We improve the calculations of the $\eta \to \pi^0 \gamma \gamma$ decay within the context of meson chiral lagrangians. We use a chiral unitary approach for the meson-meson interaction, thus generating the $a_0(980)$ resonance and fixing the longstanding
A. A. Bel’kov, A. Bramon, A. Bramon, A. Bramon, A. Dobado, A. Gomez Nicola, B. M. Nefkens, C. H. Lee, C. Picciotto, D. Alde, D. Alde, D. Antreasyan, D. Antreasyan, E. Marco, E. Oset, G. Ecker, H. Albrecht, H. Yamagishi, J. A. Oller, J. A. Oller, J. A. Oller, J. A. Oller, J. A. Oller, J. A. Oller, J. A. Oller, J. A. Oller, J. Bijnens, J. Bijnens, J. E. Palomar, J. F. Donoghue, J. F. Donoghue, J. Gasser, J. N. Ng, J. Nieves, J. R. Peláez, K. Hagiwara, L. Ametller, L. G. Landsberg, L. Roca, M. Jetter, M. N. Achasov, N. Kaiser, P. Ko, P. Ko, S. Bellucci, S. Oneda, T. Oest, T. Oest, Y. Nemoto   +48 more
core   +3 more sources

Meson properties in magnetized quark matter [PDF]

, 2017
We study neutral and charged meson properties in magnetic field. Taking bosolization method in a two-flavor Nambu--Jona-Lasinio model, we derive effective meson Lagrangian density with minimal coupling to the magnetic field, by employing derivative ...
Ziyue Wang, P. Zhuang
semanticscholar   +1 more source

Tetraquark operators in lattice QCD and exotic flavour states in the charm sector

Journal of High Energy Physics, 2017
We present a general class of operators resembling compact tetraquarks which have a range of colour-flavour-spin structures, transform irreducibly under the symmetries of the lattice and respect other relevant symmetries.
Gavin K. C. Cheung, Christopher E. Thomas, Jozef J. Dudek, Robert G. Edwards, for the Hadron Spectrum collaboration   +4 more
doaj   +1 more source

New Exotic Meson and Baryon Resonances from Doubly Heavy Hadronic Molecules. [PDF]

Physical Review Letters, 2015
We predict several new exotic doubly heavy hadronic resonances, inferring from the observed exotic bottomoniumlike and charmoniumlike narrow states X(3872), Z_{b}(10610), Z_{b}(10650), Z_{c}(3900), and Z_{c}(4020/4025). We interpret the binding mechanism
M. Karliner, J. Rosner
semanticscholar   +1 more source