Poincaré Covariant Light-Front Spectral Function and Transverse Momentum Distributions

2020 ◽  
pp. 691-695
Author(s):  
Emanuele Pace ◽  
Giovanni Salmè ◽  
Sergio Scopetta
Keyword(s):  
Transverse Momentum ◽  
Spectral Function ◽  
Light Front ◽  
Momentum Distributions

scholarly journals Light-front spin-dependent spectral function and nucleon momentum distributions for a three-body system

2017 ◽  
Vol 95 (1) ◽  
Author(s):  
Alessio Del Dotto ◽  
Emanuele Pace ◽  
Giovanni Salmè ◽  
Sergio Scopetta
Keyword(s):  
Spectral Function ◽  
Light Front ◽  
Body System ◽  
Nucleon Momentum ◽  
Momentum Distributions ◽  
Three Body

scholarly journals Neutron Transverse-Momentum Distributions and Polarized 3He within Light-Front Hamiltonian Dynamics

2013 ◽  
Vol 54 (7-10) ◽  
pp. 1079-1082 ◽  
Author(s):  
Emanuele Pace ◽  
Giovanni Salmè ◽  
Sergio Scopetta ◽  
Alessio Del Dotto ◽  
Matteo Rinaldi
Keyword(s):  
Transverse Momentum ◽  
Hamiltonian Dynamics ◽  
Light Front ◽  
Momentum Distributions

scholarly journals Light-front transverse momentum distributions for J=1/2 hadronic systems in valence approximation

2021 ◽  
Vol 104 (6) ◽  
Author(s):  
Rocco Alessandro ◽  
Alessio Del Dotto ◽  
Emanuele Pace ◽  
Gabriele Perna ◽  
Giovanni Salmè ◽  
...  
Keyword(s):  
Transverse Momentum ◽  
Light Front ◽  
Momentum Distributions ◽  
Valence Approximation

scholarly journals Color Confinement, Hadron Dynamics, and Hadron Spectroscopy from Light-Front Holography and Superconformal Algebra

2018 ◽  
Vol 2018 ◽  
pp. 1-16 ◽  
Author(s):  
Stanley J. Brodsky
Keyword(s):  
Transverse Momentum ◽  
Structure Functions ◽  
Mass Scale ◽  
Superconformal Algebra ◽  
Light Front ◽  
Hamiltonian Equation ◽  
Hadron Spectroscopy ◽  
Fifth Dimension ◽  
Running Coupling ◽  
Momentum Distributions

The QCD light-front Hamiltonian equation HLFΨ=M2Ψ derived from quantization at fixed LF time τ=t  +  z/c provides a causal, frame-independent method for computing hadron spectroscopy as well as dynamical observables such as structure functions, transverse momentum distributions, and distribution amplitudes. The QCD Lagrangian with zero quark mass has no explicit mass scale. de Alfaro, Fubini, and Furlan (dAFF) have made an important observation that a mass scale can appear in the equations of motion without affecting the conformal invariance of the action if one adds a term to the Hamiltonian proportional to the dilatation operator or the special conformal operator. If one applies the dAFF procedure to the QCD light-front Hamiltonian, it leads to a color-confining potential κ4ζ2 for mesons, where ζ2 is the LF radial variable conjugate to the qq¯ invariant mass squared. The same result, including spin terms, is obtained using light-front holography, the duality between light-front dynamics and AdS5, if one modifies the AdS5 action by the dilaton eκ2z2 in the fifth dimension z. When one generalizes this procedure using superconformal algebra, the resulting light-front eigensolutions provide a unified Regge spectroscopy of meson, baryon, and tetraquarks, including remarkable supersymmetric relations between the masses of mesons and baryons and a universal Regge slope. The pion qq¯ eigenstate has zero mass at mq=0. The superconformal relations also can be extended to heavy-light quark mesons and baryons. This approach also leads to insights into the physics underlying hadronization at the amplitude level. I will also discuss the remarkable features of the Poincaré invariant, causal vacuum defined by light-front quantization and its impact on the interpretation of the cosmological constant. AdS/QCD also predicts the analytic form of the nonperturbative running coupling αs(Q2)∝e-Q2/4κ2. The mass scale κ underlying hadron masses can be connected to the parameter ΛMS¯ in the QCD running coupling by matching the nonperturbative dynamics to the perturbative QCD regime. The result is an effective coupling αs(Q2) defined at all momenta. One obtains empirically viable predictions for spacelike and timelike hadronic form factors, structure functions, distribution amplitudes, and transverse momentum distributions. Finally, I address the interesting question of whether the momentum sum rule is valid for nuclear structure functions.

ResBos and ePump Analysis on ATLAS 8TeV Z Boson Transverse Momentum Distributions

2021 ◽  
Author(s):  
Qaynar Jandaolet ◽  
Alim Ablat ◽  
Pazilet Obul ◽  
Reyima Rashidin ◽  
Ibrahim Sitiwaldi
Keyword(s):  
Transverse Momentum ◽  
Z Boson ◽  
Momentum Distributions

Longitudinal- and Transverse-Momentum Distributions forπ−Mesons in18.5−GeVc π±pInteractions

1971 ◽  
Vol 26 (25) ◽  
pp. 1589-1592 ◽  
Author(s):  
N. N. Biswas ◽  
N. M. Cason ◽  
V. P. Kenney ◽  
J. T. Powers ◽  
W. D. Shephard ◽  
...  
Keyword(s):  
Transverse Momentum ◽  
Momentum Distributions

scholarly journals Erratum to: Extraction of partonic transverse momentum distributions from semi-inclusive deep-inelastic scattering, Drell-Yan and Z-boson production

2019 ◽  
Vol 2019 (6) ◽  
Author(s):  
Alessandro Bacchetta ◽  
Filippo Delcarro ◽  
Cristian Pisano ◽  
Marco Radici ◽  
Andrea Signori
Keyword(s):  
Transverse Momentum ◽  
Inelastic Scattering ◽  
Deep Inelastic Scattering ◽  
Z Boson ◽  
Boson Production ◽  
Momentum Distributions

scholarly journals Transverse momentum distributions of neutral pions from central and peripheral16O+Au collisions at 200A·GeV

1990 ◽  
Vol 47 (3) ◽  
pp. 367-375 ◽  
Author(s):  
◽  
R. Albrecht ◽  
T. C. Awes ◽  
C. Baktash ◽  
P. Beckmann ◽  
...  
Keyword(s):  
Transverse Momentum ◽  
Neutral Pions ◽  
Momentum Distributions

scholarly journals Global extraction of partonic transverse momentum distributions from semi-inclusive deep inelastic scattering and Drell-Yan data

2017 ◽  
Vol 938 ◽  
pp. 012041
Author(s):  
Filippo Delcarro ◽  
Alessandro Bacchetta ◽  
Cristian Pisano ◽  
Marco Radici ◽  
Andrea Signori
Keyword(s):  
Transverse Momentum ◽  
Inelastic Scattering ◽  
Deep Inelastic Scattering ◽  
Momentum Distributions

scholarly journals A description of transverse momentum distributions in Au + Au collisions at sNN= 62.4 and 130 GeV

2018 ◽  
Vol 56 (6) ◽  
pp. 2639-2645
Author(s):  
Jia-Qi Hui ◽  
Zhi-Jin Jiang ◽  
Dong-Fang Xu
Keyword(s):  
Transverse Momentum ◽  
Momentum Distributions
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