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Um modelo teórico para o cálculo do raio do próton [PDF]

open access: yesRevista Brasileira de Ensino de Física, 2021
Medir o raio do próton oferece informações a respeito de sua estrutura interna, de modo que medidas utilizando diferentes métodos foram realizadas ao longo da história. Contudo, em 2010 uma nova medida diferindo 4% das anteriores gerou o problema chamado
Renata Krupczak, César Augusto Dartora
doaj   +2 more sources

Time-dependent study of K S → π + π − decays for flavour physics measurements

open access: yesJournal of High Energy Physics, 2021
Nowadays High Energy Physics experiments can accumulate unprecedented statistics of heavy flavour decays that allows to apply new methods, based on the study of very rare phenomena, which used to be just desperate.
P. Pakhlov, V. Popov
doaj   +1 more source

Unconventional Mechanisms of Heavy Quark Fragmentation

open access: yesUniverse, 2023
Heavy and light quarks produced in high-pT partonic collisions radiate differently. Heavy quarks regenerate their color field, stripped-off in the hard reaction, much faster than the light ones and radiate a significantly smaller fraction of the initial ...
Boris Kopeliovich   +3 more
doaj   +1 more source

Effects of finite coverage on global polarization observables in heavy ion collisions

open access: yesPhysics Letters B, 2018
In non-central relativistic heavy ion collisions, the created matter possesses a large initial orbital angular momentum. Particles produced in the collisions could be polarized globally in the direction of the orbital angular momentum due to spin–orbit ...
Shaowei Lan   +3 more
doaj   +1 more source

Parton Distribution Functions in the CTEQ framework

open access: yesDera Natung Government College Research Journal, 2020
Parton distribution functions (PDFs) are important to study the structure of the proton and hence the dynamics of quarks and gluons inside it. We study some of the PDFs from global CTEQ (Coordinated Theoretical-Experimental project on QCD) analysis in a ...
Diptimonta Neog, Akbari Jahan
doaj   +1 more source

Quark Deconfinement in Rotating Neutron Stars

open access: yesUniverse, 2017
In this paper, we use a three flavor non-local Nambu–Jona-Lasinio (NJL) model, an improved effective model of Quantum Chromodynamics (QCD) at low energies, to investigate the existence of deconfined quarks in the cores of neutron stars.
Richard D. Mellinger   +4 more
doaj   +1 more source

Aplicacao de Equacoes da Dinamica da Cavidade ao Modelo de Sacolas da Fisica de Particulas Elementares

open access: yesVetor, 2007
As equacoes da dinamica da cavidade para formacao de bolhas em fluidos podem ser aplicadas na analise dos modelos de sacola da Fisica de Particulas Elementares.
Gil Bazanini, Braz Edson Palladino
doaj   +4 more sources

Search for the QCD Critical Point with Fluctuations of Conserved Quantities in Relativistic Heavy-Ion Collisions at RHIC

open access: yesEPJ Web of Conferences, 2017
Fluctuations of conserved quantities are predicted to be sensitive observables to probe the QCD phase transition and critical point in heavy-ion collisions.
Luo Xiaofeng
doaj   +1 more source

The Structure of the Hadron-Quark Combustion Zone

open access: yesUniverse, 2019
Hadron-quark combustion in dense matter is a central topic in the study of phases in compact stars and their high-energy astrophysics. We critically reviewed the literature on hadron-quark combustion, dividing them into a “first wave” that ...
Amir Ouyed   +2 more
doaj   +1 more source

Proton internal pressure distribution suggests a simple proton structure

open access: yesJournal of the Mechanical Behavior of Materials, 2019
Understanding the origin of quark confinement in hadrons remains one of the most challenging problems in modern physics. Recently, the pressure distribution inside the proton was measured via deeply virtual Compton scattering.
Vayenas Constantinos G.   +2 more
doaj   +1 more source

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