Measurement of exclusive pion pair production in proton–proton collisions at ?s=7TeV with the ATLAS detector
Küçük Resim Yok
Tarih
2023
Dergi Başlığı
Dergi ISSN
Cilt Başlığı
Yayıncı
Institute for Ionics
Erişim Hakkı
info:eu-repo/semantics/openAccess
Özet
The exclusive production of pion pairs in the process pp? pp?+?- has been measured at s=7TeV with the ATLAS detector at the LHC, using 80?b-1 of low-luminosity data. The pion pairs were detected in the ATLAS central detector while outgoing protons were measured in the forward ATLAS ALFA detector system. This represents the first use of proton tagging to measure an exclusive hadronic final state at the LHC. A cross-section measurement is performed in two kinematic regions defined by the proton momenta, the pion rapidities and transverse momenta, and the pion–pion invariant mass. Cross-section values of 4.8±1.0(stat)-0.2+0.3(syst)?b and 9±6(stat)-2+2(syst)?b are obtained in the two regions; they are compared with theoretical models and provide a demonstration of the feasibility of measurements of this type. © 2023, The Author(s).
Açıklama
Anahtar Kelimeler
Kaynak
European Physical Journal C
WoS Q Değeri
Scopus Q Değeri
N/A
Cilt
83
Sayı
7
