scholarly journals Weak interaction phenomena, W-S model of electro-weak interactions, weak decays of quarks and leptons, charmed particle lifetimes, the tau lepton lifetime, [and] charmed baryon polarization in neutrino interactions

1981 ◽  
Author(s):  
Steven Michael Errede
Keyword(s):  
Weak Interaction ◽  
Weak Interactions ◽  
Tau Lepton ◽  
Charmed Baryon ◽  
Neutrino Interactions ◽  
Weak Decays ◽  
Charmed Particle ◽  
S Model ◽  
Interaction Phenomena

scholarly journals Charmed baryon weak decays with SU(3) flavor symmetry

2017 ◽  
Vol 2017 (11) ◽  
Author(s):  
C. Q. Geng ◽  
Y. K. Hsiao ◽  
Chia-Wei Liu ◽  
Tien-Hsueh Tsai
Keyword(s):  
Flavor Symmetry ◽  
Charmed Baryon ◽  
Weak Decays

scholarly journals Non-standard interactions in $\tau^- \to (\pi^-\eta,\pi^-\pi^0)\nu_{\tau}$ decays

2019 ◽  
Author(s):  
Gabriel Lopez Castro
Keyword(s):  
Weak Interactions ◽  
High Energy ◽  
New Physics ◽  
Tau Lepton ◽  
Tau Decays ◽  
Set Constraints ◽  
Belle Ii ◽  
Lepton Decays ◽  
Energy Processes ◽  
New Interactions

Originally thought as clean processes to study the hadronization of the weak currents, semileptonic tau lepton decays can be useful to set constraints on non-standard (NS) weak interactions. We study the effects of new interactions in \tau^- \to (\pi^-\eta,\pi^-\pi^0)\nu_{\tau}τ−→(π−η,π−π0)ντ decays and find that they are sensitive probes of these New Physics effects in the form of scalar and tensor interactions, respectively. Further improved measurements at Belle II will set limits on these scalar interactions that are similar to other low and high energy processes.

Quark Mixing Angles and Weak Decays

2019 ◽  
pp. 283-294
Author(s):  
Michael E. Peskin
Keyword(s):  
Weak Interaction ◽  
Time Reversal ◽  
Particle Physics ◽  
General Scheme ◽  
Theory Model ◽  
Cabibbo Angle ◽  
Mixing Angles ◽  
Weak Decays ◽  
Quark Mixing ◽  
The Standard Model

This chapter presents the extension of the gauge theory model of the weak interaction to describe the weak interaction decays of quarks. It introduces the Cabibbo angle and the more general scheme of CKM mixing. It describes the realization of parity, CP, and time reversal symmetries in a general theory of quark mixing. Finally, it pulls all of the strands of previous chapters together to write the full set of equations of the Standard Model of particle physics.

scholarly journals Charmed baryon decay to a strange baryon plus a pion using QCD sum rules

2019 ◽  
Vol 34 (03n04) ◽  
pp. 1950015 ◽  
Author(s):  
Leonard S. Kisslinger ◽  
Bijit Singha
Keyword(s):  
Sum Rules ◽  
Qcd Sum Rules ◽  
Charmed Baryons ◽  
Charmed Baryon ◽  
Strange Baryon ◽  
Weak Decays ◽  
Baryon Decay

This is an extension of the prediction of strange baryon decays to the decays of charmed baryons using QCD sum rules. Using QCD sum rules, we estimate the decay [Formula: see text]. Although some weak decays of the [Formula: see text] have been measured, since it is difficult to measure [Formula: see text] our estimates should be useful for future experiments.

Electroweak Interactions and W, Z Boson Properties

2020 ◽  
Author(s):  
Maarten Boonekamp ◽  
Matthias Schott
Keyword(s):  
Standard Model ◽  
Weak Interaction ◽  
Top Quark ◽  
Quantum Electrodynamics ◽  
Weak Interactions ◽  
Higgs Field ◽  
Nuclear Research ◽  
Strong Interactions ◽  
Weak Boson ◽  
The Standard Model

With the huge success of quantum electrodynamics (QED) to describe electromagnetic interactions in nature, several attempts have been made to extend the concept of gauge theories to the other known fundamental interactions. It was realized in the late 1960s that electromagnetic and weak interactions can be described by a single unified gauge theory. In addition to the photon, the single mediator of the electromagnetic interaction, this theory predicted new, heavy particles responsible for the weak interaction, namely the W and the Z bosons. A scalar field, the Higgs field, was introduced to generate their mass. The discovery of the mediators of the weak interaction in 1983, at the European Center for Nuclear Research (CERN), marked a breakthrough in fundamental physics and opened the door to more precise tests of the Standard Model. Subsequent measurements of the weak boson properties allowed the mass of the top quark and of the Higgs Boson to be predicted before their discovery. Nowadays, these measurements are used to further probe the consistency of the Standard Model, and to place constrains on theories attempting to answer still open questions in physics, such as the presence of dark matter in the universe or unification of the electroweak and strong interactions with gravity.

scholarly journals Hadronic weak decays of the charmed baryon Ωc

2020 ◽  
Vol 101 (9) ◽  
Author(s):  
Shiyong Hu ◽  
Guanbao Meng ◽  
Fanrong Xu
Keyword(s):  
Charmed Baryon ◽  
Weak Decays

scholarly journals PERSISTENT CHALLENGES OF QUANTUM CHROMODYNAMICS

2006 ◽  
Vol 21 (28n29) ◽  
pp. 5695-5719 ◽  
Author(s):  
M. SHIFMAN
Keyword(s):  
Quantum Chromodynamics ◽  
Strong Interaction ◽  
Nuclear Physics ◽  
Weak Coupling ◽  
Weak Interactions ◽  
Question Mark ◽  
Color Confinement ◽  
Regge Behavior ◽  
Holographic Description ◽  
Interaction Phenomena

Unlike some models whose relevance to Nature is still a big question mark, Quantum Chromodynamics (QCD) will stay with us forever. QCD, born in 1973, is a very rich theory supposed to describe the widest range of strong interaction phenomena: from nuclear physics to Regge behavior at large E, from color confinement to quark–gluon matter at high densities/temperatures (neutron stars); the vast horizons of the hadronic world: chiral dynamics, glueballs, exotics, light and heavy quarkonia and mixtures thereof, exclusive and inclusive phenomena, interplay between strong forces and weak interactions, etc. Efforts aimed at solving the underlying theory, QCD, continue. In a remarkable entanglement, theoretical constructions of the 1970's and 1990's combine with today's ideas based on holographic description and strong–weak coupling duality, to provide new insights and a deeper understanding.

Charmed-baryon weak decays in heavy-quark effective theory

1992 ◽  
Vol 45 (9) ◽  
pp. R3024-R3026 ◽  
Author(s):  
Gurpreet Kaur ◽  
M. P. Khanna
Keyword(s):  
Heavy Quark ◽  
Effective Theory ◽  
Heavy Quark Effective Theory ◽  
Charmed Baryon ◽  
Weak Decays

scholarly journals Weak decays of heavy hadrons into dynamically generated resonances

2016 ◽  
Vol 25 (01) ◽  
pp. 1630001 ◽  
Author(s):  
Eulogio Oset ◽  
Wei-Hong Liang ◽  
Melahat Bayar ◽  
Ju-Jun Xie ◽  
Lian Rong Dai ◽  
...  
Keyword(s):  
Weak Interaction ◽  
Weak Decay ◽  
Final State ◽  
Hadron Interaction ◽  
Heavy Mesons ◽  
Weak Decays ◽  
Quantum Numbers ◽  
Unitary Approach ◽  
Chiral Unitary Approach ◽  
Interpretation Of Results

In this paper, we present a review of recent works on weak decay of heavy mesons and baryons with two mesons, or a meson and a baryon, interacting strongly in the final state. The aim is to learn about the interaction of hadrons and how some particular resonances are produced in the reactions. It is shown that these reactions have peculiar features and act as filters for some quantum numbers which allow to identify easily some resonances and learn about their nature. The combination of basic elements of the weak interaction with the framework of the chiral unitary approach allow for an interpretation of results of many reactions and add a novel information to different aspects of the hadron interaction and the properties of dynamically generated resonances.

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