Zobrazeno 1 - 10
of 66
pro vyhledávání: '"Ling Fong Li"'
Autor:
Ta-Pei Cheng, author, Ling-Fong Li, author
Externí odkaz:
https://doi.org/10.1093/oso/9780198506218.001.0001
Publikováno v:
Physics Letters B. 553:277-283
When μeγ (or τμγ) loop involves a vector boson, the amplitude is suppressed by more than two powers of heavy particle masses. However we show that the scalar boson loop diagrams are much less damped. Particularly, the loop amplitude in which the
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::30e59b2bb10cc9941be25896c12c2ba6
https://doi.org/10.1016/s0370-2693(02)03258-6
https://doi.org/10.1016/s0370-2693(02)03258-6
Autor:
Ta-Pei Cheng, Ling-Fong Li
Publikováno v:
Physics Letters B. 502:152-158
One way to detect the presence of new particles in theories beyond the standard model is through their contribution to electroweak loop effects. We comment on the importance of a consistent inclusion of their mixing angles to ensure that the physical
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::8e1928f5b05e75329a96de9ffc493a75
https://doi.org/10.1016/s0370-2693(01)00202-7
https://doi.org/10.1016/s0370-2693(01)00202-7
Autor:
Ling-Fong Li
A simple introduction of renormalization in quantum field theory is discussed. Explanation of concepts is emphasized instead of the technical details.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::461effed39fb22ee6cffd36d148245f0
https://doi.org/10.1142/9789814425810_0017
https://doi.org/10.1142/9789814425810_0017
Publikováno v:
The European Physical Journal C. 73
We study the problem how to deal with tensor-type two-loop integrals in the Loop Regularization (LORE) scheme. We use the two-loop photon vacuum polarization in the massless Quantum Electrodynamics (QED) as the example to present the general procedur
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::0c29a6daa4de268ddfae646d463447cd
https://doi.org/10.1140/epjc/s10052-013-2353-6
https://doi.org/10.1140/epjc/s10052-013-2353-6
Autor:
Ling-Fong Li, Ta-Pei Cheng
Publikováno v:
Physical Review Letters. 74:2872-2875
A simple calculation in the framework of the chiral quark theory of Manohar and Georgi yields results that can account for many of the ''failures'' of the naive quark model: significant strange quark content in the nucleon as indicated by the value o
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::92e93ff08a54b6196082a39e4175746f
https://doi.org/10.1103/physrevlett.74.2872
https://doi.org/10.1103/physrevlett.74.2872
Autor:
Luís Lavoura, Ling-Fong Li
Publikováno v:
Physical Review D. 49:1409-1416
We compute the oblique parameters, including the three new parameters $ V $, $ W $ and $ X $ introduced recently by the Montreal group, for the case of one scalar multiplet of arbitrary weak isospin $ J $ and weak hypercharge $ Y $. We show that, whe
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::ed52dea695ec646d82ec7fa0643ac87d
https://doi.org/10.1103/physrevd.49.1409
https://doi.org/10.1103/physrevd.49.1409
Autor:
Ling-Fong Li
Publikováno v:
Zeitschrift für Physik C Particles and Fields. 58:519-522
The contributions of heavy scalar fields to the oblique electroweak correction parametersS andT are discussed with an emphasis of the decoupling properties of these contributions. It turns out that in the decoupling limit, we also get the custodial s
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::32dade5f7af06ca230b2a0cc7c7033a8
https://doi.org/10.1007/bf01557712
https://doi.org/10.1007/bf01557712
Autor:
Ta-Pei Cheng, Ling-Fong Li
Publikováno v:
Lecture Notes in Physics ISBN: 9783540646341
After a pedagogical review of the simple constituent quark model and deep inelastic sum rules, we describe how a quark sea as produced by the emission of internal Goldstone bosons by the valence quarks can account for the observed features of proton
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::ed68d211ac8110fb05837737b17c1209
https://doi.org/10.1007/bfb0106894
https://doi.org/10.1007/bfb0106894
Autor:
Ling-Fong Li, Ta-Pei Cheng
Publikováno v:
Physics Letters B. 234:165-169
The calculation of neutron EDM due to the exchange of neutral Higgs bosons is reconsidered. We find that, contrary to previous claims, both the scalar and the pseudoscalar Higgs nucleon couplings are not dominated by the heavy-quark contributions. Th
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::4b17ba9c7defa3a0a7b96377bed84f38
https://doi.org/10.1016/0370-2693(90)92022-b
https://doi.org/10.1016/0370-2693(90)92022-b