Measurement of differential cross sections for single diffractive dissociation in √s = 8 TeV pp collisions using the ATLAS ALFA spectrometer

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 d...

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Detalles Bibliográficos
Autores principales: Alonso, Francisco, Arduh, Francisco Anuar, Dova, María Teresa, Hoya, Joaquín, Monticelli, Fernando Gabriel, Orellana, Gonzalo Enrique, Wahlberg, Hernán Pablo, The ATLAS Collaboration
Formato: Articulo
Lenguaje:Inglés
Publicado: 2020
Materias:
Física
Diffraction
Forward physics
Hadron-Hadron scattering (experiments)
QCD
Acceso en línea:http://sedici.unlp.edu.ar/handle/10915/125729
Aporte de:
SEDICI (UNLP) de Universidad Nacional de La Plata
id I19-R120-10915-125729
record_format dspace
institution Universidad Nacional de La Plata
institution_str I-19
repository_str R-120
collection SEDICI (UNLP)
language Inglés
topic Física
Diffraction
Forward physics
Hadron-Hadron scattering (experiments)
QCD
spellingShingle Física
Diffraction
Forward physics
Hadron-Hadron scattering (experiments)
QCD
Alonso, Francisco
Arduh, Francisco Anuar
Dova, María Teresa
Hoya, Joaquín
Monticelli, Fernando Gabriel
Orellana, Gonzalo Enrique
Wahlberg, Hernán Pablo
The ATLAS Collaboration
Measurement of differential cross sections for single diffractive dissociation in √s = 8 TeV pp collisions using the ATLAS ALFA spectrometer
topic_facet Física
Diffraction
Forward physics
Hadron-Hadron scattering (experiments)
QCD
description 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 < log<sub>10</sub>ξ < −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 ∝ e<sup>Bt</sup> 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.
format Articulo
Articulo
author Alonso, Francisco
Arduh, Francisco Anuar
Dova, María Teresa
Hoya, Joaquín
Monticelli, Fernando Gabriel
Orellana, Gonzalo Enrique
Wahlberg, Hernán Pablo
The ATLAS Collaboration
author_facet Alonso, Francisco
Arduh, Francisco Anuar
Dova, María Teresa
Hoya, Joaquín
Monticelli, Fernando Gabriel
Orellana, Gonzalo Enrique
Wahlberg, Hernán Pablo
The ATLAS Collaboration
author_sort Alonso, Francisco
title Measurement of differential cross sections for single diffractive dissociation in √s = 8 TeV pp collisions using the ATLAS ALFA spectrometer
title_short Measurement of differential cross sections for single diffractive dissociation in √s = 8 TeV pp collisions using the ATLAS ALFA spectrometer
title_full Measurement of differential cross sections for single diffractive dissociation in √s = 8 TeV pp collisions using the ATLAS ALFA spectrometer
title_fullStr Measurement of differential cross sections for single diffractive dissociation in √s = 8 TeV pp collisions using the ATLAS ALFA spectrometer
title_full_unstemmed Measurement of differential cross sections for single diffractive dissociation in √s = 8 TeV pp collisions using the ATLAS ALFA spectrometer
title_sort measurement of differential cross sections for single diffractive dissociation in √s = 8 tev pp collisions using the atlas alfa spectrometer
publishDate 2020
url http://sedici.unlp.edu.ar/handle/10915/125729
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AT arduhfranciscoanuar measurementofdifferentialcrosssectionsforsinglediffractivedissociationins8tevppcollisionsusingtheatlasalfaspectrometer
AT dovamariateresa measurementofdifferentialcrosssectionsforsinglediffractivedissociationins8tevppcollisionsusingtheatlasalfaspectrometer
AT hoyajoaquin measurementofdifferentialcrosssectionsforsinglediffractivedissociationins8tevppcollisionsusingtheatlasalfaspectrometer
AT monticellifernandogabriel measurementofdifferentialcrosssectionsforsinglediffractivedissociationins8tevppcollisionsusingtheatlasalfaspectrometer
AT orellanagonzaloenrique measurementofdifferentialcrosssectionsforsinglediffractivedissociationins8tevppcollisionsusingtheatlasalfaspectrometer
AT wahlberghernanpablo measurementofdifferentialcrosssectionsforsinglediffractivedissociationins8tevppcollisionsusingtheatlasalfaspectrometer
AT theatlascollaboration measurementofdifferentialcrosssectionsforsinglediffractivedissociationins8tevppcollisionsusingtheatlasalfaspectrometer
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