skip to main content
Visitante
Meu Espaço
Minha Conta
Sair
Identificação
This feature requires javascript
Tags
Revistas Eletrônicas (eJournals)
Livros Eletrônicos (eBooks)
Bases de Dados
Bibliotecas USP
Ajuda
Ajuda
Idioma:
Inglês
Espanhol
Português
This feature required javascript
This feature requires javascript
Primo Search
Busca Geral
Busca Geral
Acervo Físico
Acervo Físico
Produção Intelectual da USP
Produção USP
Search For:
Clear Search Box
Search in:
Busca Geral
Or select another collection:
Search in:
Busca Geral
Busca Avançada
Busca por Índices
This feature requires javascript
This feature requires javascript
Measuring the 2{gamma} Exchange Effect in Electron-Proton Scattering at CLAS
Bennett, Robert Paul
AIP conference proceedings, 2011-10, Vol.1374 (1)
[Periódico revisado por pares]
United States
Sem texto completo
Citações
Citado por
Serviços
Detalhes
Resenhas & Tags
Nº de Citações
This feature requires javascript
Enviar para
Adicionar ao Meu Espaço
Remover do Meu Espaço
E-mail (máximo 30 registros por vez)
Imprimir
Link permanente
Referência
EasyBib
EndNote
RefWorks
del.icio.us
Exportar RIS
Exportar BibTeX
This feature requires javascript
Título:
Measuring the 2{gamma} Exchange Effect in Electron-Proton Scattering at CLAS
Autor:
Bennett, Robert Paul
Assuntos:
ACCELERATOR FACILITIES
;
ACCELERATORS
;
ANTILEPTONS
;
ANTIMATTER
;
ANTIPARTICLES
;
BARYONS
;
BOSONS
;
CEBAF ACCELERATOR
;
COMPUTER CODES
;
COMPUTERIZED SIMULATION
;
CROSS SECTIONS
;
DATA ANALYSIS
;
ELASTIC SCATTERING
;
ELECTRON-NUCLEON INTERACTIONS
;
ELECTRON-PROTON INTERACTIONS
;
ELECTRONS
;
ELEMENTARY PARTICLES
;
ENERGY RANGE
;
FERMIONS
;
G CODES
;
GEV RANGE
;
HADRONS
;
INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY
;
INTERACTIONS
;
LEPTON-BARYON INTERACTIONS
;
LEPTON-HADRON INTERACTIONS
;
LEPTON-NUCLEON INTERACTIONS
;
LEPTON-PROTON INTERACTIONS
;
LEPTONS
;
LINEAR ACCELERATORS
;
MASSLESS PARTICLES
;
MATTER
;
MEASURING INSTRUMENTS
;
MULTIPARTICLE SPECTROMETERS
;
NUCLEONS
;
PARTICLE INTERACTIONS
;
PARTICLE STRUCTURE
;
PHOTONS
;
PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
;
POLARIZATION
;
POSITRONS
;
PROTONS
;
SCATTERING
;
SIMULATION
;
SPECTROMETERS
É parte de:
AIP conference proceedings, 2011-10, Vol.1374 (1)
Descrição:
Recent results from experiments at Jefferson Laboratory, Newport News VA, which measure the ratio of the electric to magnetic form factors of the proton, G{sub E}/G{sub M}, have forced us to reexamine the single photon exchange approximation in lepton-proton elastic scattering. Discrepancies between the ratio obtained via the time-tested Rosenbluth separation method and new polarization transfer measurements, which differ by as much as a factor of three, may be resolved by considering the effect of two photon exchange (TPE). Theoretical corrections for the TPE effect are difficult due to the large number of excited nucleon states that can contribute to the process. The TPE effect can, however, be determined directly by measuring the ratio of the positron-proton to electron-proton elastic scattering cross sections, R = {sigma}(e{sup +})/{sigma}(e{sup -}), since the TPE effect changes sign with the charge of the incident particle. The CLAS TPE experiment at Jefferson Laboratory, will determine the effect of two-photon exchange in elastic lepton-proton scattering by precisely measuring the ratio of positron-proton to electron-proton elastic cross sections over a large kinematic range (0.1<{epsilon}<0.96, 0.02{<=}Q{sup 2}{<=}2.0). We will accomplish this by directing the 5.5 GeV primary electron beam, provided by the Continuous Electron Beam Accelerator Facility (CEBAF), onto a set of radiators and converters to produce simultaneous and identical beams of electron and positrons. Acceptance and efficiency concerns are minimized by only considering the ratios of the elastic cross sections and switching polarity of magnets in the beam line and the spectrometer. Guided by the results of a short 2006 test run and extensive GEANT based modeling, new shielding and beam line components were designed to maximize luminosity. The unique experimental design and challenges of the TPE experiment and the projected luminosities will be presented.
Editor:
United States
Idioma:
Inglês
Links
View this record in Osti.gov
This feature requires javascript
This feature requires javascript
Voltar para lista de resultados
This feature requires javascript
This feature requires javascript
Buscando em bases de dados remotas. Favor aguardar.
Buscando por
em
scope:(USP_PRODUCAO),scope:(USP_EBOOKS),scope:("PRIMO"),scope:(USP),scope:(USP_EREVISTAS),scope:(USP_FISICO),primo_central_multiple_fe
Mostrar o que foi encontrado até o momento
This feature requires javascript
This feature requires javascript