The Particle Data Group: Growth and Operations-Eighteen Years of Particle Physics

1975 ◽  
Vol 25 (1) ◽  
pp. 555-598 ◽  
Author(s):  
A H Rosenfeld
Keyword(s):  
Particle Physics ◽  
Particle Data Group ◽  
Data Group

scholarly journals Current experiments in particle physics - particle data group

1996 ◽  
Author(s):  
H. Galic ◽  
F. Lehar ◽  
P.R. Kettle
Keyword(s):  
Particle Physics ◽  
Particle Data Group ◽  
Data Group

scholarly journals Semi-leptonic decays of a particle to three bodies

2018 ◽  
Vol 1 (2) ◽  
pp. 214-221
Author(s):  
Mauricio Rozo-Clavijo ◽  
Carlos Germán Cortés-Hernández ◽  
Javier Alberto Olarte-Torres
Keyword(s):  
Experimental Data ◽  
Particle Physics ◽  
The Other ◽  
Particle Data Group ◽  
Physics Courses ◽  
Leptonic Decays ◽  
First Approximation ◽  
University Level ◽  
Data Group ◽  
Spectator Model

Is presented the dynamics and kinematics of the semi-leptonic decays with interaction  V-A calculating the decay width and the fraction of decay for each process using spectator model. The results are compared with the experimental data of the table particle data group, which show that the model prediction for this type of decay can be considered as a first approximation. This type of analysis is particularly important because it allows one hand, introduce to the beginner students to the study of particle physics and on the other gives the possibility to use strategies to address topics modern in physics courses at university level.

scholarly journals Power Laws and Elementary Particle Decays

Sci ◽  
2019 ◽  
Vol 1 (3) ◽  
pp. 59
Author(s):  
Leonardo Chiatti
Keyword(s):  
Elementary Particle ◽  
Power Law ◽  
Power Laws ◽  
Order Structure ◽  
Particle Data Group ◽  
Rest Energy ◽  
The Standard Model ◽  
Using Data ◽  
Particle Decays ◽  
Data Group

This study analyzes the correlation between the lifetime and the rest energy of the unstable particle states with a lifetime greater than the zeptosecond (10−21 s), using data available from the Particle Data Group. This set of states seems to be divided into three groups, in each of which the two quantities can be correlated through a remarkably accurate power law. Although this fact does not represent anything new compared to the predictions of the Standard Model, it nevertheless reveals an unexpected order structure in the set of particle decays, emerging from such predictions.

scholarly journals KAON PHOTOPRODUCTION ON THE NUCLEON WITH CONSTRAINED PARAMETERS

2009 ◽  
Vol 24 (11n13) ◽  
pp. 964-967
Author(s):  
R. NELSON ◽  
T. MART
Keyword(s):  
Experimental Data ◽  
Particle Data Group ◽  
Resonance Decay ◽  
Decay Widths ◽  
Data Group

The new experimental data of kaon photoproduction on the nucleon γp → K+Λ have been analyzed by means of a multipoles model. Different from the previous models, in this analysis the resonance decay widths are constrained to the values given by the Particle Data Group (PDG). The result indicates that constraining these parameters to the PDG values could dramatically change the conclusion of the important resonances in this reaction found in the previous studies.

scholarly journals Quark decay top to two bodies

2019 ◽  
Vol 13 (2) ◽  
pp. 289-293
Author(s):  
Mauricio Rozo-Clavijo ◽  
Carlos Germán Cortés-Hernández ◽  
Javier Alberto Olarte-Torres
Keyword(s):  
Top Quark ◽  
Particle Physics ◽  
Decay Process ◽  
Introductory Courses ◽  
Top Quark Decay ◽  
University Level ◽  
Quark Decay ◽  
The Spectator ◽  
Data Group ◽  
Two Bodies

Is investigated the top quark decay (t) two bodies using the spectator model. Is analyzed the decay (t→bW⁺) calculated theoretically the width of decay and decay fraction of the particle whose result is compared with the experimental data of the table Particle Data group. The model prediction on the decay process can be considered good as a first approach to this class of decay. This type of analysis is particularly important because it allows one hand, familiarize students with the decays of particles and on the other, open a space to introduce topics of particle physics in the introductory courses at university level.

scholarly journals Standard versus non-standard CP phases in neutrino oscillation in matter with non-unitarity

2020 ◽  
Vol 2020 (6) ◽  
Author(s):  
Ivan Martinez-Soler ◽  
Hisakazu Minakata
Keyword(s):  
Neutral Current ◽  
Phase Correlation ◽  
Charged Current ◽  
Unitary Matrix ◽  
Particle Data Group ◽  
Unitary Evolution ◽  
First Order ◽  
Flavor Mixing ◽  
Mixing Matrix ◽  
Data Group

Abstract We formulate a perturbative framework for the flavor transformation of the standard active three neutrinos but with a non-unitary flavor mixing matrix, a system which may be relevant for the leptonic unitarity test. We use the $\alpha$ parametrization of the non-unitary matrix and take its elements $\alpha_{\beta \gamma}$ ($\beta,\gamma = e,\mu,\tau$) and the ratio $\epsilon \simeq \Delta m^2_{21} / \Delta m^2_{31}$ as the small expansion parameters. Two qualitatively new features that hold in all the oscillation channels are uncovered in the probability formula obtained to first order in the expansion: (1) The phases of the complex $\alpha$ elements always come into the observable in the particular combination with the $\nu$SM CP phase $\delta$ in the form $[e^{- i \delta } \bar{\alpha}_{\mu e}, ~e^{ - i \delta} \bar{\alpha}_{\tau e}, ~\bar{\alpha}_{\tau \mu}]$ under the Particle Data Group convention of a unitary $\nu$SM mixing matrix. (2) The diagonal $\alpha$ parameters appear in particular combinations $\left( a/b - 1 \right) \alpha_{ee} + \alpha_{\mu \mu}$ and $\alpha_{\mu \mu} - \alpha_{\tau \tau}$, where $a$ and $b$ denote, respectively, the matter potential due to charged current and neutral current reactions. This property holds only in the unitary evolution part of the probability, and there is no such feature in the genuine non-unitary part, while the $\delta$–$\alpha$ parameter phase correlation exists for both. The reason for such remarkable stability of the phase correlation is discussed.

Semileptonic decays of D, B, K mesons and the full CKM matrix from unquenched lattice QCD

2005 ◽  
Vol 20 (15) ◽  
pp. 3469-3475 ◽  
Author(s):  
◽  
Masataka Okamoto
Keyword(s):  
Lattice Qcd ◽  
Form Factors ◽  
Semileptonic Decays ◽  
Experimental Result ◽  
Particle Data Group ◽  
Matrix Elements ◽  
Ckm Matrix ◽  
Ckm Matrix Elements ◽  
K Mesons ◽  
Data Group

We use lattice QCD to fully determine the CKM matrix. |Vcd|, |Vcs|, |Vub|, |Vcb| and |Vus| are, respectively, directly determined with our lattice results for form factors of semileptonic D → πlν, D → Klν, B → πlν, B → Dlν and K → πlν decays. The accuracy is comparable to that of the Particle Data Group averages. In addition, |Vud|, |Vtb|, |Vts| and |Vtd| are determined by using unitarity of the CKM matrix and the experimental result for sin (2β). In this way, we obtain all 9 CKM matrix elements, where the only theoretical input is lattice QCD.

Sign in / Sign up

Export Citation Format

Share Document