Publication: Measurement of differential cross sections for single diffractive dissociation in √s = 8 TeV pp collisions using the ATLAS ALFA spectrometer
Дата
2020
Авторы
Aad, G.
Abbott, B.
Abbott, D. C.
Abdinov, O.
Belotskiy, K.
Belyaev, N. L.
Bulekov, O.
Kantserov, V. A.
Kurova, A.
Ponomarenko, D.
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Аннотация
© 2020, The Author(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. [Figure not available: see fulltext.]
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Measurement of differential cross sections for single diffractive dissociation in √s = 8 TeV pp collisions using the ATLAS ALFA spectrometer / Aad, G. [et al.] // Journal of High Energy Physics. - 2020. - 2020. - № 2. - 10.1007/JHEP02(2020)042
URI
https://www.doi.org/10.1007/JHEP02(2020)042
https://www.scopus.com/record/display.uri?eid=2-s2.0-85079500025&origin=resultslist
http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=Alerting&SrcApp=Alerting&DestApp=WOS_CPL&DestLinkType=FullRecord&UT=WOS:000515812400002
https://openrepository.mephi.ru/handle/123456789/20306
https://www.scopus.com/record/display.uri?eid=2-s2.0-85079500025&origin=resultslist
http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=Alerting&SrcApp=Alerting&DestApp=WOS_CPL&DestLinkType=FullRecord&UT=WOS:000515812400002
https://openrepository.mephi.ru/handle/123456789/20306