Zobrazeno 1 - 10
of 58
pro vyhledávání: '"F. E. Close"'
Autor:
F. E. Close, S. Monaghan
Quark and gluon interactions are computed inside a rigid spherical cavity. The formalism successfully rederives some old MIT bag results for energy shifts and will provide new applications to mixing problems, glue in the ${\ensuremath{\eta}}^{\ensure
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::07435dab8992c327034c90eede84f2f2
https://ora.ox.ac.uk/objects/uuid:786bfd1a-7aea-4f48-b880-df15d581a07c
https://ora.ox.ac.uk/objects/uuid:786bfd1a-7aea-4f48-b880-df15d581a07c
Autor:
F. E. Close
Publikováno v:
Contemporary Physics. 38:1-12
Atoms of light do not exist. However, according to the standard theory of the powerful forces that act on and within protons, neutrons and all strongly interacting particles, there are new forms of particle that are subnuclear analogues to 'atoms of
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::9653ec739c8a83698e51a470c401e0ea
https://doi.org/10.1080/001075197182522
https://doi.org/10.1080/001075197182522
Autor:
Achim Wambach, F. E. Close
Publikováno v:
Physics Letters B. 348:207-212
Recently we have shown that due account of Wigner spin rotations is needed to match the ISGW model consistently onto HQET. We now discuss the flavour dependence of this procedure. We find that for finite mass ``heavy'' quark the universal function $\
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::59c1f7d9556101ba30fe072b45f3d123
https://doi.org/10.1016/0370-2693(95)00118-5
https://doi.org/10.1016/0370-2693(95)00118-5
Publikováno v:
Physics Letters B. 319:291-299
We investigate some phenomenological consequences of an idea [see V.N. Gribov, Lund preprint LU-TP 91-7 (March 1991), and in preparation] that the ƒ 0 (975) and a0(980) play a special role in the dynamics of quark confinement.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::bc5c9e70c39ad78f3bdc3d0fbc96c21d
https://doi.org/10.1016/0370-2693(93)90816-z
https://doi.org/10.1016/0370-2693(93)90816-z
Autor:
F. E. Close, Zhenping Li
Publikováno v:
Zeitschrift für Physik C Particles and Fields. 54:147-162
The couplings of conventional and hybrid mesons to γγ (real and virtual) and their production amplitudes in ψ→γM are described in a unified manner. Existing results for heavy quarks are recovered, extensions to light quarks and to virtual γ co
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::d03eb0a000651f3556ba65c2264ea0cb
https://doi.org/10.1007/bf01881718
https://doi.org/10.1007/bf01881718
Autor:
F. E. Close
Publikováno v:
Nuclear Physics B - Proceedings Supplements. 21:423-429
I made a survey of what people thought was important for highlighting in the summary. No-one said that I should ignore their work; there was also a general feeling that the status of the scalar mesons was a question that kept coming up throughout the
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::a91c6824aa5a08b7eae447dce0db0325
https://doi.org/10.1016/0920-5632(91)90284-l
https://doi.org/10.1016/0920-5632(91)90284-l
Publikováno v:
Physical Review D. 43:2161-2170
Theories of the two-photon couplings of $P$-wave positronium and $q\overline{q}$ systems are reviewed and a relationship is found between field-theoretic calculations of $q\overline{q}\ensuremath{\rightarrow}\ensuremath{\gamma}\ensuremath{\gamma}$ an
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::92545a906053c40ada2df6788620a30a
https://doi.org/10.1103/physrevd.43.2161
https://doi.org/10.1103/physrevd.43.2161
Autor:
F. E. Close
Publikováno v:
Quark Cluster Dynamics ISBN: 9783540564379
The scalar mesons f0(975) and a0(980) can be produced in ϕ radiative decays and in γγ collisions. The ratio of the f0 and a0 production rates may determine the substructure of these mesons.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::c75f699516ff7357e8b187db66187360
https://doi.org/10.1007/3-540-56437-3_38
https://doi.org/10.1007/3-540-56437-3_38
Autor:
F. E. Close, Zhenping Li
Publikováno v:
Physical Review D. 42:2194-2206
We review and update the theory on photo- and electroproduction in the nonrelativistic constituent quark model (NRCQM). The electromagnetic interaction Hamiltonian for a three-quark system is discussed, particularly the nonadditive term and the role
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::597802ba864891700bc9b9a4623303f0
https://doi.org/10.1103/physrevd.42.2194
https://doi.org/10.1103/physrevd.42.2194
Autor:
F. E. Close, S. Kumano
Publikováno v:
Physical Review C. 41:1855-1858
We investigate a dependence of the ``old'' European Muon Collaboration (EMC) effect on nuclear structure, namely the dependence on the location of the struck quark within a nucleus (``local'' EMC effect). The EMC effect is examined by the rescaling m
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::1cda3058df6f501ea5303148bd590107
https://doi.org/10.1103/physrevc.41.1855
https://doi.org/10.1103/physrevc.41.1855