ATLAS jet energy scale and resolution in early Run 2

• Autores: Otero y Garzon, Gustavo Javier; Piegaia, Ricardo Nestor; Bossio Sola, Jonathan David; Dassoulas, J.; Aaboud, M; Aad, G.; Bawa, H.S.; Burch, T.J.; Carlino, G.; Dallapiccola, C.; Diaconu, C.; Düren, M.; Forti, A.; Giokaris, N.; Han, L.; Iizawa, T; Honda,S; Hubaut, F.; Kozakai, C.; Meloni, F.; Nooney,T.; Rauch, D.M.; Resconi,S.; Sánchez, J.; Schioppa, M.; Sidiropoulou, O.; Tas, P.; Unel, G.; Viel,S; Winston, O. J.; Zemla,A.; Zwalinski, L.
• Año de publicación: 2017
• Idioma: inglés
• Tipo de recurso: artículo
• Materia: ATLAS; JES; JER
• Institución: Consejo Nacional de Investigaciones Científicas y Técnicas

Jet energy scale measurements and their systematic uncertainties are reported for jets measured with the ATLAS detector using proton-proton collision data with a center-of-mass energy of ffiffi s p ¼ 13 TeV, corresponding to an integrated luminosity of 3.2 fb−1 collected during 2015 at the LHC. Jets are reconstructed from energy deposits forming topological clusters of calorimeter cells, using the anti-kt algorithm with radius parameter R ¼ 0.4. Jets are calibrated with a series of simulation-based corrections and in situ techniques. In situ techniques exploit the transverse momentum balance between a jet and a reference object such as a photon, Z boson, or multijet system for jets with 20 < pT < 2000 GeV and pseudorapidities of jηj < 4.5, using both data and simulation. An uncertainty in the jet energy scale of less than 1% is found in the central calorimeter region (jηj < 1.2) for jets with 100 < pT < 500 GeV. An uncertainty of about 4.5% is found for low-pT jets with pT ¼ 20 GeV in the central region, dominated by uncertainties in the corrections for multiple proton-proton interactions. The calibration of forward jets (jηj > 0.8) is derived from dijet pT balance measurements. For jets of pT ¼ 80 GeV, the additional uncertainty for the forward jet calibration reaches its largest value of about 2% in the range jηj > 3.5 and in a narrow slice of 2.2 < jηj < 2.4.
Fil: Otero y Garzon, Gustavo Javier. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Física de Buenos Aires. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Física de Buenos Aires; Argentina
Fil: Piegaia, Ricardo Nestor. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Física de Buenos Aires. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Física de Buenos Aires; Argentina
Fil: Bossio Sola, Jonathan David. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Física de Buenos Aires. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Física de Buenos Aires; Argentina
Fil: Dassoulas, J.. Department of Physics, University of Alberta, Edmonton Alberta, Canada; Canadá
Fil: Aaboud, M. Faculté des Sciences, Université Mohamed Premier and LPTPM, Oujda,. ; Marruecos
Fil: Aad, G.. CPPM, Aix-Marseille Université and CNRS/IN2P3, Marseille,; Francia
Fil: Bawa, H.S.. SLAC National Accelerator Laboratory, Stanford California, ; Estados Unidos
Fil: Burch, T.J.. Department of Physics, Northern Illinois University, DeKalb Illinois; Estados Unidos
Fil: Carlino, G.. Dipartimento di Fisica, Università di Napoli, Napoli, ; Italia
Fil: Dallapiccola, C.. Department of Physics, University of Massachusetts, Amherst Massachusetts,; Estados Unidos
Fil: Diaconu, C.. CPPM, Aix-Marseille Université and CNRS/IN2P3, Marseille; Francia
Fil: Düren, M.. II Physikalisches Institut, Justus-Liebig-Universität Giessen, Giessen; Alemania
Fil: Forti, A.. School of Physics and Astronomy, University of Manchester, Manchester, ; Reino Unido
Fil: Giokaris, N.. Physics Department, National and Kapodistrian University of Athens, Athens,; Grecia
Fil: Han, L.. aDepartment of Modern Physics and State Key Laboratory of Particle Detection and Electronics, University of Science and Technology of China, Anhui, C; China
Fil: Iizawa, T. Waseda University, Tokyo,; Japón
Fil: Honda,S. Faculty of Pure and Applied Sciences, and Center for Integrated Research in Fundamental Science and Engineering, University of Tsukuba, Tsukuba,; Japón
Fil: Hubaut, F.. CPPM, Aix-Marseille Université and CNRS/IN2P3, Marseille, ; Francia
Fil: Kozakai, C.. International Center for Elementary Particle Physics and Department of Physics, The University of Tokyo, Tokyo,; Japón
Fil: Meloni, F.. Albert Einstein Center for Fundamental Physics and Laboratory for High Energy Physics, University of Bern, Bern,; Suiza
Fil: Nooney,T.. School of Physics and Astronomy, Queen Mary University of London, London, ; Reino Unido
Fil: Rauch, D.M.. DESY, Hamburg and Zeuthen, ; Alemania
Fil: Resconi,S.. INFN Sezione di Milano,; Italia
Fil: Sánchez, J.. Instituto de Fisica Corpuscular (IFIC) and Departamento de Fisica Atomica, Molecular y Nuclear and Departamento de Ingeniería Electrónica and Instituto de Microelectrónica de Barcelona (IMB-CNM), University of Valencia and CSIC, Valencia; España
Fil: Schioppa, M.. INFN Gruppo Collegato di Cosenza, Laboratori Nazionali di Frascati, ; Italia
Fil: Sidiropoulou, O.. Fakultät für Physik und Astronomie, Julius-Maximilians-Universität, Würzburg, ; Alemania
Fil: Tas, P.. Charles University, Faculty of Mathematics and Physics, Prague,; República Checa
Fil: Unel, G.. Department of Physics and Astronomy, University of California Irvine, Irvine California, ; Estados Unidos
Fil: Viel,S. Physics Division, Lawrence Berkeley National Laboratory and University of California, Berkeley CA, ; Estados Unidos
Fil: Winston, O. J.. Department of Physics and Astronomy, University of Sussex, Brighton,; Reino Unido
Fil: Zemla,A.. AGH University of Science and Technology, Faculty of Physics and Applied Computer Science, Krakow,; Polonia
Fil: Zwalinski, L.. CERN, Geneva, ; Suiza