Dijet production in root s=7 TeV pp collisions with large rapidity gaps at the ATLAS experiment

G. Aad; B. Abbott; J. Abdallah; O. Abdinov; R. Aben; O.S. AbouZeid; H. Abramowicz; H. Abreu; R. Abreu; David L. Adams; S. P. Ahlen; J. Albert; T. Adye; Mogens Dam; Jørn Dines Hansen; Jørgen Beck Hansen; Stefania Xella; Peter Henrik Hansen; Troels Christian Petersen; Lotte Ansgaard Thomsen; Almut Maria Pingel; Ask Emil Løvschall-Jensen; Alejandro Alonso Diaz; James William Monk; Lars Egholm Pedersen; Graig Wiglesworth; Gorm Aske Gram Krohn Galster

doi:10.1016/j.physletb.2016.01.028

Dijet production in root s=7 TeV pp collisions with large rapidity gaps at the ATLAS experiment

G. Aad, B. Abbott, J. Abdallah, O. Abdinov, R. Aben, O.S. AbouZeid, H. Abramowicz, H. Abreu, R. Abreu, David L. Adams, S. P. Ahlen, J. Albert, T. Adye, Mogens Dam, Jørn Dines Hansen, Jørgen Beck Hansen, Stefania Xella, Peter Henrik Hansen, Troels Christian Petersen, Lotte Ansgaard ThomsenAlmut Maria Pingel, Ask Emil Løvschall-Jensen, Alejandro Alonso Diaz, James William Monk, Lars Egholm Pedersen, Graig Wiglesworth, Gorm Aske Gram Krohn Galster

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Abstract

A 6.8 nb⁻¹ sample of pp collision data collected under low-luminosity conditions at s=7TeV by the ATLAS detector at the Large Hadron Collider is used to study diffractive dijet production. Events containing at least two jets with p_T>20GeV are selected and analysed in terms of variables which discriminate between diffractive and non-diffractive processes. Cross sections are measured differentially in Δη^F, 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 Δη^F and small ξ˜ with a diffractive contribution which is significant at the highest Δη^F 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.

Originalsprog	Engelsk
Tidsskrift	Physics Letters B
Vol/bind	754
Sider (fra-til)	214-234
ISSN	0370-2693
DOI	https://doi.org/10.1016/j.physletb.2016.01.028
Status	Udgivet - 10 mar. 2016

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10.1016/j.physletb.2016.01.028

1-s2.0-S037026931600040X-mainForlagets udgivne version, 1,02 MBLicens: CC BY

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Aad, G., Abbott, B., Abdallah, J., Abdinov, O., Aben, R., AbouZeid, O. S., Abramowicz, H., Abreu, H., Abreu, R., Adams, D. L., Ahlen, S. P., Albert, J., Adye, T., Dam, M., Hansen, J. D., Hansen, J. B., Xella, S., Hansen, P. H., Petersen, T. C., ... Galster, G. A. G. K. (2016). Dijet production in root s=7 TeV pp collisions with large rapidity gaps at the ATLAS experiment. Physics Letters B, 754, 214-234. https://doi.org/10.1016/j.physletb.2016.01.028

Aad, G, Abbott, B, Abdallah, J, Abdinov, O, Aben, R, AbouZeid, OS, Abramowicz, H, Abreu, H, Abreu, R, Adams, DL, Ahlen, SP, Albert, J, Adye, T, Dam, M , Hansen, JD , Hansen, JB , Xella, S , Hansen, PH , Petersen, TC, Thomsen, LA, Pingel, AM, Løvschall-Jensen, AE, Alonso Diaz, A, Monk, JW, Pedersen, LE, Wiglesworth, G & Galster, GAGK 2016, 'Dijet production in root s=7 TeV pp collisions with large rapidity gaps at the ATLAS experiment', Physics Letters B, bind 754, s. 214-234. https://doi.org/10.1016/j.physletb.2016.01.028

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title = "Dijet production in root s=7 TeV pp collisions with large rapidity gaps at the ATLAS experiment",

abstract = "A 6.8 nb−1 sample of pp collision data collected under low-luminosity conditions at s=7TeV by the ATLAS detector at the Large Hadron Collider is used to study diffractive dijet production. Events containing at least two jets with pT>20GeV 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.",

author = "G. Aad and B. Abbott and J. Abdallah and O. Abdinov and R. Aben and O.S. AbouZeid and H. Abramowicz and H. Abreu and R. Abreu and Adams, {David L.} and Ahlen, {S. P.} and J. Albert and T. Adye and Mogens Dam and Hansen, {J{\o}rn Dines} and Hansen, {J{\o}rgen Beck} and Stefania Xella and Hansen, {Peter Henrik} and Petersen, {Troels Christian} and Thomsen, {Lotte Ansgaard} and Pingel, {Almut Maria} and L{\o}vschall-Jensen, {Ask Emil} and {Alonso Diaz}, Alejandro and Monk, {James William} and Pedersen, {Lars Egholm} and Graig Wiglesworth and Galster, {Gorm Aske Gram Krohn}",

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doi = "10.1016/j.physletb.2016.01.028",

language = "English",

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T1 - Dijet production in root s=7 TeV pp collisions with large rapidity gaps at the ATLAS experiment

AU - Aad, G.

AU - Abbott, B.

AU - Abdallah, J.

AU - Abdinov, O.

AU - Aben, R.

AU - AbouZeid, O.S.

AU - Abramowicz, H.

AU - Abreu, H.

AU - Abreu, R.

AU - Adams, David L.

AU - Ahlen, S. P.

AU - Albert, J.

AU - Adye, T.

AU - Dam, Mogens

AU - Hansen, Jørn Dines

AU - Hansen, Jørgen Beck

AU - Xella, Stefania

AU - Hansen, Peter Henrik

AU - Petersen, Troels Christian

AU - Thomsen, Lotte Ansgaard

AU - Pingel, Almut Maria

AU - Løvschall-Jensen, Ask Emil

AU - Alonso Diaz, Alejandro

AU - Monk, James William

AU - Pedersen, Lars Egholm

AU - Wiglesworth, Graig

AU - Galster, Gorm Aske Gram Krohn

PY - 2016/3/10

Y1 - 2016/3/10

N2 - A 6.8 nb−1 sample of pp collision data collected under low-luminosity conditions at s=7TeV by the ATLAS detector at the Large Hadron Collider is used to study diffractive dijet production. Events containing at least two jets with pT>20GeV 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.

AB - A 6.8 nb−1 sample of pp collision data collected under low-luminosity conditions at s=7TeV by the ATLAS detector at the Large Hadron Collider is used to study diffractive dijet production. Events containing at least two jets with pT>20GeV 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.

U2 - 10.1016/j.physletb.2016.01.028

DO - 10.1016/j.physletb.2016.01.028

M3 - Journal article

SN - 0370-2693

VL - 754

SP - 214

EP - 234

JO - Physics Letters B

JF - Physics Letters B

ER -

Dijet production in root s=7 TeV pp collisions with large rapidity gaps at the ATLAS experiment

Abstract

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