Results 61 to 70 of about 304 (178)

Issues for the lattice in hadron spectroscopy [PDF]

Nuclear Physics B - Proceedings Supplements, 1998
Lattice QCD predicts a rich spectroscopy of glueballs and $q\bar{q}-$glue h ybrids. I compare these with data and assess the emerging empirical situation. Questions for the lattice are proposed.
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Higher partial wave contamination in finite-volume 1-to-2 transitions

Journal of High Energy Physics
In their seminal work, Lellouch and Lüscher derived a conversion factor relating a finite-volume matrix element, calculable using numerical lattice QCD, with the infinite-volume decay amplitude for K → ππ.
M. T. Hansen, T. Peterken
doaj   +1 more source

Hadron spectroscopy: theory and experiment [PDF]

Journal of Physics G: Nuclear and Particle Physics, 2007
29 pages, 9 figures, to be published in Journal of Physics G.
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Lüscher equation with long-range forces

Journal of High Energy Physics
We derive the modified Lüscher equation in the presence of the long-range force caused by the exchange of a light particle. It is shown that the use of this equation enables one to circumvent the problems related to the strong partial-wave mixing and the
Rishabh Bubna, Hans-Werner Hammer, Fabian Müller, Jin-Yi Pang, Akaki Rusetsky, Jia-Jun Wu   +5 more
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Hadron spectroscopy from the lattice [PDF]

AIP Conference Proceedings, 1998
Lattice QCD determinations appropriate to hadron spectroscopy are reviewed with emphasis on the glueball and hybrid meson states in the quenched approximation. Hybrids are discussed for heavy and for light quarks. The effects of sea quarks (unquenching) are explored. Heavy-light systems are presented - particularly excited B mesons.
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Hadronic decay of vector charmonium from the lattice

Journal of High Energy Physics
Estimating decay parameters in lattice simulations is a computationally demanding problem, requiring several volumes and momenta. We explore an alternative approach, where the transition amplitude can be extracted from the spectral decomposition of ...
Benoît Blossier, Jochen Heitger, Jan Neuendorf, Teseo San José   +3 more
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Modified Lüscher zeta-function and the modified effective range expansion in the presence of a long-range force

Journal of High Energy Physics
An efficient numerical algoritm is proposed for the calculation of the modified Lüscher zeta-function in the presence of a long-range force. Using the formalism developed in ref.
Rishabh Bubna, Hans-Werner Hammer, Bai-Long Hoid, Jin-Yi Pang, Akaki Rusetsky, Jia-Jun Wu   +5 more
doaj   +1 more source

Hadron Spectroscopy with COMPASS at CERN [PDF]

Journal of Physics: Conference Series, 2012
The aim of the COMPASS hadron programme is to study the light-quark hadron spectrum, and in particular, to search for evidence of hybrids and glueballs. COMPASS is a fixed-target experiment at the CERN SPS and features a two-stage spectrometer with high momentum resolution, large acceptance, particle identification and calorimetry. A short pilot run in
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The hadronic vacuum polarization contribution to the muon g − 2 at long distances

Journal of High Energy Physics
We present our lattice QCD result for the long-distance part of the hadronic vacuum polarization contribution, ( a μ hvp $$ {a}_{\mu}^{\textrm{hvp}} $$ )LD, to the muon g − 2 in the time-momentum representation.
Dalibor Djukanovic, Georg von Hippel, Simon Kuberski, Harvey B. Meyer, Nolan Miller, Konstantin Ottnad, Julian Parrino, Andreas Risch, Hartmut Wittig   +8 more
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Light hadron spectroscopy at BEPC [PDF]

Nuclear Physics A, 2001
Postscript file, 10 pages.
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