Abstract

A 6.8 nb−1 sample of pp collision data collected under low-luminosity conditions at sqrt(s) = 7 TeV by the ATLAS detector at the Large Hadron Collider is used to study diffractive dijet production. Events containing at least two jets with pT>20 GeV are selected and analysed in terms of variables which discriminate between diffractive and non-diffractive processes. Cross sections are measured differentially in ΔηF, the size of the observable forward region of pseudorapidity which is devoid of hadronic activity, and in an estimator, ξ~, of the fractional momentum loss of the proton assuming single diffractive dissociation (pp→pX). Model comparisons indicate a dominant non-diffractive contribution up to moderately large ΔηF and small ξ~, with a diffractive contribution which is significant at the highest ΔηF and the lowest ξ~. The rapidity-gap survival probability is estimated from comparisons of the data in this latter region with predictions based on diffractive parton distribution functions.

Autore Pugliese

• Spagnolo Stefania Antonia , Ventura Andrea , Gorini Edoardo

Tutti gli autori

• G. AAD , G. CHIODINI , E. GORINI , M. PRIMAVERA , S. SPAGNOLO , A. VENTURA

Titolo volume/Rivista

PHYSICS LETTERS. SECTION B

Anno di pubblicazione

2016

ISSN

0370-2693

ISBN

Non Disponibile

Numero di citazioni Wos

12

Ultimo Aggiornamento Citazioni

22/04/2018

Numero di citazioni Scopus

8

Ultimo Aggiornamento Citazioni

22/04/2018

Settori ERC

Non Disponibile

Codici ASJC

Non Disponibile