Zobrazeno 1 - 10
of 157
pro vyhledávání: '"H. Sazdjian"'
Publikováno v:
European Physical Journal C: Particles and Fields, Vol 81, Iss 1, Pp 1-22 (2021)
Abstract In the Wick–Cutkosky model, where two scalar massive constituents interact by means of the exchange of a scalar massless particle, the Bethe–Salpeter equation has solutions of two types, called “normal” and “abnormal”. In the non
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https://doaj.org/article/d16089f22e1040a18ff87966899f7e6d
Akademický článek
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Autor:
H. Sazdjian
Publikováno v:
Fizika Elementarnykh Chastits i Atomnogo Yadra / Physics of Particles and Nuclei
Fizika Elementarnykh Chastits i Atomnogo Yadra / Physics of Particles and Nuclei, MAIK Nauka/Interperiodica, 2014, 45, pp.782-787. ⟨10.1134/S1063779614040133⟩
Fizika Elementarnykh Chastits i Atomnogo Yadra / Physics of Particles and Nuclei, MAIK Nauka/Interperiodica, 2014, 45, pp.782-787. ⟨10.1134/S1063779614040133⟩
International audience; Properties of gauge invariant two-point quark Green’s functions, defined with polygonal Wilson lines, are studied. The Green’s functions can be classified according to the number of straight line segments their polygonal l
Autor:
H. Sazdjian
Publikováno v:
Nuclear and Particle Physics Proceedings
18th Montpellier International Conference on Quantum Chromodynamics (QCD 15)
18th Montpellier International Conference on Quantum Chromodynamics (QCD 15), Jun 2015, Montpellier, France. pp.93-97, ⟨10.1016/j.nuclphysbps.2016.02.020⟩
18th Montpellier International Conference on Quantum Chromodynamics (QCD 15)
18th Montpellier International Conference on Quantum Chromodynamics (QCD 15), Jun 2015, Montpellier, France. pp.93-97, ⟨10.1016/j.nuclphysbps.2016.02.020⟩
The phenomenon of dynamical quark mass generation is studied in QCD within the framework of a gauge invariant formalism. An exact relationship is established between the equation satisfied by the scalar part of the two-point gauge invariant quark Gre
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::ed0397946f7b9a0c816cbce848536c74
Autor:
H. Sazdjian
Publikováno v:
Frontiers of Physics
Frontiers of Physics, Springer, 2016, 11 (1), pp.111101. ⟨10.1007/s11467-015-0515-8⟩
Frontiers of Physics, Springer, 2016, 11 (1), pp.111101. ⟨10.1007/s11467-015-0515-8⟩
The main aspects of a gauge-invariant approach to the description of quark dynamics in the nonperturbative regime of QCD are first reviewed. In particular, the role of the parallel transport operation in constructing gauge-invariant Green's functions
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::9981073a5ade9df80b8413c07924c7c4
Autor:
H. Sazdjian, H. Jallouli
Publikováno v:
European Physical Journal C: Particles and Fields
European Physical Journal C: Particles and Fields, Springer Verlag (Germany), 2006, 48, pp.561-578. ⟨10.1140/epjc/s10052-006-0076-7⟩
European Physical Journal C: Particles and Fields, Springer Verlag (Germany), 2006, 48, pp.561-578. ⟨10.1140/epjc/s10052-006-0076-7⟩
The energy and decay width of the pi-K atom are evaluated in the framework of the quasipotential-constraint theory approach. The main electromagnetic and isospin symmetry breaking corrections to the lowest-order formulas for the energy shift from the
Autor:
H. Sazdjian
Publikováno v:
Nuclear Physics B - Proceedings Supplements. 86:271-274
The relationship between the pionium lifetime and the $\pi\pi$ scattering lengths is established, including the sizable electromagnetic corrections. The bound state formalism that is used is that of constraint theory which provides a covariant three-
Autor:
H. Sazdjian, H. Jallouli
Publikováno v:
Journal of Mathematical Physics
Journal of Mathematical Physics, American Institute of Physics (AIP), 1997, 38, pp.4951-4970
Journal of Mathematical Physics, American Institute of Physics (AIP), 1997, 38, pp.4951-4970
Using connection with quantum field theory, the infinitesimal covariant abelian gauge transformation laws of relativistic two-particle constraint theory wave functions and potentials are established and weak invariance of the corresponding wave equat
Autor:
H. Sazdjian
Publikováno v:
Physical Review D
Physical Review D, American Physical Society, 2013, 88, pp.025034. ⟨10.1103/PhysRevD.88.025034⟩
Physical Review D, American Physical Society, 2013, 88, pp.025034. ⟨10.1103/PhysRevD.88.025034⟩
Using gauge invariant quark Green's functions, defined with path-ordered gluon field phase factors along polygonal lines, and functional relations among them, two compatible bound state equations of the Dirac type are established for quark-antiquark
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::a6e30866f87d5f946a94be8288988782
http://hal.in2p3.fr/in2p3-00841676
http://hal.in2p3.fr/in2p3-00841676
Autor:
H. Sazdjian
Publikováno v:
AIP Conference Proceedings.
Path-ordered phase factors of gluon fields are used to construct gauge invariant quark Green’s functions. Polygonal lines for the paths allow for a classification of the Green’s functions according to the number of sides they contain. A closed se