Results 101 to 110 of about 71,159 (257)

Precise Measurements of the Leptonic Branching Ratios of the Tau Lepton [PDF]

Physical Review Letters, 1985
Precise measurements are reported for the leptonic branching ratios of the T lepton from the reaction e+e+ T+Tobserved with the MAC detector operating at PEP. Results from samples in which one T decays into three charged particles and the other to e or /,L are B, = 0.180 f 0.009 f 0.006 and B, = 0.183f0.009f0.005.
, Ash, , Band, , Blume, , Camporesi, , Chadwick, , Coombes, , Delfino, , Fernandez, , Ford, , Gettner, , Goderre, , Groom, , Heltsley, , Hurst, , Johnson, , Lau, , Lavine, , Leedy, , Lippi, , Maruyama, , Messner, , Moromisato, , Moss, , Muller, , Nelson, , Peruzzi, , Piccolo, , Prepost, , Qi, , Read, , Ritson, , Rosenberg, , Shambroom, , Sleeman, , Smith, , Venuti, , von Goeler E, , Verdini, , Wald, , Weinstein, , Wiser, , Zdarko   +41 more
openaire   +2 more sources

Neutrino Magnetic Moment in the Doublet‐Singlet Leptoquark Model

Advances in High Energy Physics, Volume 2026, Issue 1, 2026.
The transition magnetic moment for Majorana neutrinos is studied in a simple extension of the Standard Model. This extension incorporates two scalar Leptoquarks S1 and R~2 with quantum numbers 3¯,113,/ and (3, 2, 1/6), respectively. It is found that these Leptoquarks generate a sizable transition magnetic moment, particularly when the quark bottom is ...
R. Sánchez-Vélez, Theocharis Kosmas
wiley   +1 more source

Internal multiplicity distributions of jets from nonlinear evolution within the jet function framework

Journal of High Energy Physics
Jets selected with high internal charged-particle multiplicity exhibit markedly different substructure patterns compared to inclusive jet samples.
Pi Duan, Weiyao Ke, Guang-You Qin, Lei Wang   +3 more
doaj   +1 more source

Analytical Description of the Distributions of Primary and Secondary Cosmogenic Particles

Advances in High Energy Physics, Volume 2026, Issue 1, 2026.
In this work, we present an analytical description of the energy distributions of primary and secondary cosmogenic particles on Earth in terms of parameters having clear physical meaning. A modified power law is assumed for energy distributions, incorporating terms such as energy loss/decay, which are effective at low energies, and a source term, which
Shvetaank Tripathi, Prashant Shukla, Subhash Singha   +2 more
wiley   +1 more source

New physics in the angular distribution of B c − $$ {B}_c^{-} $$ → J/ψ(→ μ + μ − )τ − (→ π − ν τ ) ν ¯ τ $$ {\overline{\nu}}_{\tau } $$ decay

Journal of High Energy Physics, 2021
In B c − $$ {B}_c^{-} $$ → J/ψ(→ μ + μ − )τ − ν ¯ τ $$ {\overline{\nu}}_{\tau } $$ decay, the three-momentum p τ − $$ {\boldsymbol{p}}_{\tau^{-}} $$ cannot be determined accurately due to the decay products of τ − inevitably include an undetected ν τ ...
Quan-Yi Hu, Xin-Qiang Li, Xiao-Long Mu, Ya-Dong Yang, Dong-Hui Zheng   +4 more
doaj   +1 more source

Lepton flavor violation as a probe of quark-lepton unification [PDF]

Physical Review D, 2005
The recent measurements of the solar neutrino mixing angle theta_{sol} and the Cabibbo mixing angle theta_C reveal a surprising relation, theta_{sol}+theta_C ~ pi/4. Interpreting this empirical relation as a support of the quark-lepton unification, we find that the PMNS mixing matrix can be decomposed into a CKM-like matrix and maximal mixing matrices,
Cheung, Kingman, Kang, Sin Kyu, Kim, C. S., Lee, Jake   +3 more
openaire   +2 more sources

Mass Spectra, Radii, and Decay Widths of Toponium

Advances in High Energy Physics, Volume 2026, Issue 1, 2026.
In this work, the radial Schrodinger equation with a nonrelativistic quark potential model (NRQPM) is solved numerically by employing the shooting method. Calculated numerical wave functions (or solutions) are used to compute the masses, root mean square (RMS) radii, E1, M1 radiative transition widths, annihilation decay widths, and branching ratios of
Nosheen Akbar, Ishrat Asghar, Zaki Ahmad, Adnan Malik   +3 more
wiley   +1 more source

HFAG τ lepton averages and |Vus| determination with τ decays

, 2015
We present an updated HFAG report for the τ lepton, using τ lepton experimental results available up to Summer 2014. World averages are computed for quantities where the HFAG procedures may produce improvements over the PDG compilation.
Hayasaka, Kiyoshi, Hayashii, Hisaki, Banerjee, Swagato, Shwartz, Boris, LUSIANI, Alberto, Chrza̧szcz, Marcin, Roney, J. Michael   +6 more
core   +1 more source

Rapid and Nondestructive Analysis of Acetaminophen, Caffeine, and Chlorpheniramine Maleate in Ganmaoling Granules by NIR Spectroscopy Technology

Journal of Spectroscopy, Volume 2026, Issue 1, 2026.
The accurate quantification of acetaminophen, caffeine, and chlorpheniramine maleate in Ganmaoling Granules is essential for evaluating therapeutic efficacy and ensuring quality control. However, current detection methods are always laborious, and regulatory standards lack harmonization.
Xuexing Zhou, Yuanhong Huang, Yanqin Ouyang, Xiangjun Tu, Xiaoyang Chen, Cong Xie, Xia Li, Li Yan, Jun Wang, Pramita Mishra   +9 more
wiley   +1 more source

B ¯ s , d 0 $$ {\overline{B}}_{s,d}^0 $$ → J/ψμ + μ − decays in QCD factorization

Journal of High Energy Physics
Motivated by the first LHCb searches for the rare B ¯ s , d 0 $$ {\overline{B}}_{s,d}^0 $$ → J/ψμ + μ − decays, we perform a detailed study of these processes within the QCD factorization formalism.
Xin-Qiang Li, Yan Shi, Ya-Dong Yang, Xing-Bo Yuan, Chun-Yang Zhao   +4 more
doaj   +1 more source