scholarly journals Dispersive approach to QCD and inclusiveτlepton hadronic decay

2013 ◽  
Vol 88 (5) ◽  
Author(s):  
A. V. Nesterenko
Keyword(s):  
Hadronic Decay ◽  
Dispersive Approach

scholarly journals UNIFIED DISPERSIVE APPROACH TO γ* → γππ AND γγ → ππ

2014 ◽  
Vol 35 ◽  
pp. 1460399
Author(s):  
B. MOUSSALLAM
Keyword(s):  
S Wave ◽  
Large N ◽  
Model Independent ◽  
Dispersive Approach

A representation of the amplitude γ*(q2) → γππ is proposed which combines large Nc chiral resonance Lagrangian modelling with general unitarity and analyticity properties. The amplitude is constrained from γγ scattering results and e+e− → γπ0π0 measurements by the CMD-2 and SND collaborations. As an application, the contribution of the ππ + γ states in the HVP contribution to the muon g - 2 are reconsidered, taking into account the effect of the strong S-wave ππ rescattering in a model independent way.

MEASUREMENT OF THE $D \bar{D}$ CROSS SECTIONS AND D HADRONIC BRANCHING FRACTIONS

2005 ◽  
Vol 20 (16) ◽  
pp. 3701-3703
Author(s):  
Guang-Pei Chen
Keyword(s):  
Cross Section ◽  
Cross Sections ◽  
Branching Fractions ◽  
Hadronic Decay ◽  
Decay Modes ◽  
The Cross

Using 57.2 pb-1 of data collected with the CLEO-c detector at the ψ(3770) resonance, we measure absolute branching fractions for three D0 and two D+ Cabibbo-allowed hadronic decay modes, and the cross section for [Formula: see text] at [Formula: see text].

scholarly journals Study of the Drell-Yan process with the pair-production of polarized tau leptons in collisions of polarized proton beams

2019 ◽  
Vol 222 ◽  
pp. 03021
Author(s):  
A. Aleshko ◽  
E. Boos ◽  
V. Bunichev
Keyword(s):  
Parton Distribution ◽  
Polarization State ◽  
Distribution Functions ◽  
Hadronic Decay ◽  
New Method ◽  
Tau Leptons ◽  
Parton Distribution Functions ◽  
Accuracy Of Measurements ◽  
Polarized Proton

The new method for studying polarized parton distribution functions via the Drell-Yan process with tau production is proposed. The hadronic decay of tau to single charged pi-meson and neutrino is utilised for determination of the polarization state of the tau-lepton. The key feature of our approach is that we do not sum over the polarizations states of tau, but preserve this information through energies ofpions produced in corresponding decays. The new method in addition to existing ones should improve the accuracy of measurements of polarized structure functions of hadrons. In the current work, the feasibility of such an approach is assessed through numerical simulations.

scholarly journals Joint Topics on Exotic Hadron States and Heavy Flavor Hadronic Decay

2019 ◽  
Vol 2019 ◽  
pp. 1-2
Author(s):  
Xian-Wei Kang ◽  
J. A. Oller ◽  
Ling-Yun Dai ◽  
Tao Luo
Keyword(s):  
Hadronic Decay ◽  
Heavy Flavor ◽  
Exotic Hadron
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