Utilize este identificador para referenciar este registo:
https://hdl.handle.net/1822/69364
Título: | Measurement of differential cross sections for single diffractive dissociation in s√ = 8 TeV pp collisions using the ATLAS ALFA spectrometer |
Autor(es): | Onofre, A. Castro, Nuno Filipe ATLAS Collaboration |
Palavras-chave: | Diffraction Forward physics Hadron-Hadron scattering (experiments) QCD |
Data: | 2020 |
Editora: | Springer |
Revista: | Journal of High Energy Physics |
Citação: | Aad, G., Abbott, B., Abbott, D. C., Abdinov, O., Abed Abud, A., Abeling, K., . . . Zwalinski, L. (2020). Measurement of differential cross sections for single diffractive dissociation in √s = 8 TeV pp collisions using the ATLAS ALFA spectrometer. [Article]. Journal of High Energy Physics, 2020(2). doi: 10.1007/jhep02(2020)042 |
Resumo(s): | A dedicated sample of Large Hadron Collider proton-proton collision data at centre-of-mass energy s√ = 8 TeV is used to study inclusive single diffractive dissociation, pp → X p. The intact final-state proton is reconstructed in the ATLAS ALFA forward spectrometer, while charged particles from the dissociated system X are measured in the central detector components. The fiducial range of the measurement is −4.0 < log10ξ < −1.6 and 0.016 < |t| < 0.43 GeV2, where ξ is the proton fractional energy loss and t is the squared four-momentum transfer. The total cross section integrated across the fiducial range is 1.59 ± 0.13 mb. Cross sections are also measured differentially as functions of ξ, t, and ∆η, a variable that characterises the rapidity gap separating the proton and the system X . The data are consistent with an exponential t dependence, dσ/dt ∝ eBt with slope parameter B = 7.65 ± 0.34 GeV−2. Interpreted in the framework of triple Regge phenomenology, the ξ dependence leads to a pomeron intercept of α(0) = 1.07 ± 0.09. |
Tipo: | Artigo |
URI: | https://hdl.handle.net/1822/69364 |
DOI: | 10.1007/jhep02(2020)042 |
ISSN: | 1126-6708 |
e-ISSN: | 1029-8479 |
Versão da editora: | https://link.springer.com/article/10.1007%2FJHEP02%282020%29042 |
Arbitragem científica: | yes |
Acesso: | Acesso aberto |
Aparece nas coleções: | LIP - Artigos/papers |
Ficheiros deste registo:
Ficheiro | Descrição | Tamanho | Formato | |
---|---|---|---|---|
Aad2020_Article_MeasurementOfDifferentialCross.pdf | 676,58 kB | Adobe PDF | Ver/Abrir |