Publication
Measurement of dijet azimuthal decorrelations in $pp$ collisions at $\sqrt{s}=8$ TeV with the ATLAS detector and determination of the strong coupling
| dc.contributor.author | ATLAS collaboration (2892 authors) | |
| dc.contributor.author | Aguilar Saavedra, Juan Antonio | |
| dc.contributor.author | Amor Dos Santos, Susana Patricia | |
| dc.contributor.author | Anjos, Nuno | |
| dc.contributor.author | Araque Espinosa, Juan Pedro | |
| dc.contributor.author | Castro, Nuno Filipe | |
| dc.contributor.author | Conde Muino, Patricia | |
| dc.contributor.author | Da Cunha Sargedas De Sousa, Mario Jose | |
| dc.contributor.author | Fiolhais, Miguel | |
| dc.contributor.author | Galhardo, Bruno | |
| dc.contributor.author | Gomes, Agostinho | |
| dc.contributor.author | Goncalo, Ricardo | |
| dc.contributor.author | Jorge, Pedro | |
| dc.contributor.author | Machado Miguens, Joana | |
| dc.contributor.author | Maio, Amelia | |
| dc.contributor.author | Maneira, Jose | |
| dc.contributor.author | Oleiro Seabra, Luis Filipe | |
| dc.contributor.author | Onofre, Antonio | |
| dc.contributor.author | Costa Batalha Pedro, Rute | |
| dc.contributor.author | Santos, Helena | |
| dc.contributor.author | Saraiva, Joao | |
| dc.contributor.author | Silva, Jose Manuel | |
| dc.contributor.author | Tavares Delgado, Ademar | |
| dc.contributor.author | Veloso, Filipe | |
| dc.contributor.author | Wolters, Helmut | |
| dc.date.accessioned | 2019-02-05T16:21:55Z | |
| dc.date.available | 2019-02-05T16:21:55Z | |
| dc.date.issued | 2018-11-07 | |
| dc.date.updated | 2019-02-05T16:21:54Z | |
| dc.description.abstract | A measurement of the rapidity and transverse momentum dependence of dijet azimuthal decorrelations is presented, using the quantity $R_{\Delta \phi}$. The quantity $R_{\Delta \phi}$ 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 $\Delta \phi_\mathrm{max}$. The quantity $R_{\Delta \phi}$ is measured in proton--proton collisions at $\sqrt{s}=$8 TeV as a function of the dijet rapidity interval, the event total scalar transverse momentum, and $\Delta \phi_\mathrm{max}$. 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 non-perturbative 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 $\alpha_{\mathrm{S}}$ and to study its running for momentum transfers from 260 GeV to above 1.6 TeV. An analysis that combines data at all momentum transfers results in $\alpha_{\mathrm{S}}(m_{Z}) = 0.1127^{+0.0063}_{-0.0027}$. | |
| dc.description.version | Peer Reviewed | |
| dc.identifier | Phys.Rev. D98 (2018) 092004; DOI 10.1103/PhysRevD.98.092004 | |
| dc.identifier.uri | http://dx.doi.org/10.1103/PhysRevD.98.092004 | |
| dc.identifier.uri | http://hdl.handle.net/10400.26/27635 | |
| dc.language.iso | eng | |
| dc.title | Measurement of dijet azimuthal decorrelations in $pp$ collisions at $\sqrt{s}=8$ TeV with the ATLAS detector and determination of the strong coupling | |
| dc.type | journal article | |
| dspace.entity.type | Publication | |
| rcaap.rights | openAccess | pt |
| rcaap.type | article |