Measurement of dijet azimuthal decorrelations in pp collisions at s =8 TeV with the ATLAS detector and determination of the strong coupling

Forskningsoutput: TidskriftsbidragArtikel i vetenskaplig tidskrift

Standard

Measurement of dijet azimuthal decorrelations in pp collisions at s =8 TeV with the ATLAS detector and determination of the strong coupling. / ATLAS Collaboration; Aaboud, M; Åkesson, Torsten; Bocchetta, Simona; Doglioni, Caterina; Hedberg, Vincent; Jarlskog, Göran; Kalderon, Charles; Kellermann, Edgar; Lytken, Else; Mankinen, Katja; Mjörnmark, Ulf; Pöttgen, Ruth; Poulsen, Trine; Smirnova, Oxana; Viazlo, Oleksandr; Zwalinski, L.

I: Physical Review D, Vol. 98, Nr. 9, 092004, 2018.

Forskningsoutput: TidskriftsbidragArtikel i vetenskaplig tidskrift

Harvard

APA

CBE

MLA

Vancouver

Author

RIS

TY - JOUR

T1 - Measurement of dijet azimuthal decorrelations in pp collisions at s =8 TeV with the ATLAS detector and determination of the strong coupling

AU - ATLAS Collaboration

AU - Aaboud, M

AU - Åkesson, Torsten

AU - Bocchetta, Simona

AU - Doglioni, Caterina

AU - Hedberg, Vincent

AU - Jarlskog, Göran

AU - Kalderon, Charles

AU - Kellermann, Edgar

AU - Lytken, Else

AU - Mankinen, Katja

AU - Mjörnmark, Ulf

AU - Pöttgen, Ruth

AU - Poulsen, Trine

AU - Smirnova, Oxana

AU - Viazlo, Oleksandr

AU - Zwalinski, L

N1 - Export Date: 20 December 2018

PY - 2018

Y1 - 2018

N2 - A measurement of the rapidity and transverse momentum dependence of dijet azimuthal decorrelations is presented, using the quantity RΔφ. The quantity RΔφ specifies the fraction of the inclusive dijet events in which the azimuthal opening angle of the two jets with the highest transverse momenta is less than a given value of the parameter Δφmax. The quantity RΔφ is measured in proton-proton collisions at s=8 TeV as a function of the dijet rapidity interval, the event total scalar transverse momentum, and Δφmax. The measurement uses an event sample corresponding to an integrated luminosity of 20.2 fb-1 collected with the ATLAS detector at the CERN Large Hadron Collider. Predictions of a perturbative QCD calculation at next-to-leading order in the strong coupling with corrections for nonperturbative effects are compared to the data. The theoretical predictions describe the data in the whole kinematic region. The data are used to determine the strong coupling αS and to study its running for momentum transfers from 260 GeV to above 1.6 TeV. Analysis that combines data at all momentum transfers results in αS(mZ)=0.1127-0.0027+0.0063. © 2018 CERN for the ATLAS Collaboration. Published by the American Physical Society.

AB - A measurement of the rapidity and transverse momentum dependence of dijet azimuthal decorrelations is presented, using the quantity RΔφ. The quantity RΔφ specifies the fraction of the inclusive dijet events in which the azimuthal opening angle of the two jets with the highest transverse momenta is less than a given value of the parameter Δφmax. The quantity RΔφ is measured in proton-proton collisions at s=8 TeV as a function of the dijet rapidity interval, the event total scalar transverse momentum, and Δφmax. The measurement uses an event sample corresponding to an integrated luminosity of 20.2 fb-1 collected with the ATLAS detector at the CERN Large Hadron Collider. Predictions of a perturbative QCD calculation at next-to-leading order in the strong coupling with corrections for nonperturbative effects are compared to the data. The theoretical predictions describe the data in the whole kinematic region. The data are used to determine the strong coupling αS and to study its running for momentum transfers from 260 GeV to above 1.6 TeV. Analysis that combines data at all momentum transfers results in αS(mZ)=0.1127-0.0027+0.0063. © 2018 CERN for the ATLAS Collaboration. Published by the American Physical Society.

U2 - 10.1103/PhysRevD.98.092004

DO - 10.1103/PhysRevD.98.092004

M3 - Article

VL - 98

JO - Physical Review D - Particles, Fields, Gravitation and Cosmology

T2 - Physical Review D - Particles, Fields, Gravitation and Cosmology

JF - Physical Review D - Particles, Fields, Gravitation and Cosmology

SN - 1550-2368

IS - 9

M1 - 092004

ER -