Search for long-lived particles produced in pp collisions at √s=13 TeV that decay into displaced hadronic jets in the ATLAS muon spectrometer
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American Physical Society
Aaboud, M., Aad, G., Abbott, B., Abdinov, O., Abeloos, B., Abhayasinghe, D. K., ... & Abreu, H. (2019). Search for long-lived particles produced in p p collisions at s= 13 TeV that decay into displaced hadronic jets in the ATLAS muon spectrometer. Physical Review D, 99(5), 052005.
SponsorshipWe acknowledge the support of ANPCyT, Argentina; Yerevan Physics Institute, Armenia; ARC, Australia; BMWFW and FWF, Austria; Azerbaijan National Academy of Sciences, Azerbaijan; State Science and Technology Committee, Belarus; CNPq and FAPESP, Brazil; NSERC, NRC and CFI, Canada; CERN; CONICYT, Chile; CAS, MOST and NSFC, China; COLCIENCIAS, Colombia; MSMT CR, MPO CR and VSC CR, Czech Republic; DNRF and Danish Natural Science Research Council, Denmark; Institut national de physique nucl´eaire et de physique des particules, Centre National de la Recherche Scientifique, Institut de recherche sur les lois fondamentales de l'Univers, Direction des Sciences de la Mati`ere, Commissariat `a l'Énergie Atomique, France; Shota Rustaveli National Science Foundation of Georgia, Georgia; BMBF, HGF, and MPG, Germany; General Secretariat for Research and Technology, Greece; RGC, Hong Kong SAR, China; ISF and Benoziyo Center, Israel; INFN, Italy; MEXTand JSPS, Japan; CNRST, Morocco; NWO, Netherlands; RCN, Norway; MNiSW and NCN, Poland; FCT, Portugal; Ministry of National Education, Institute of Atomic Physics, Romania; Ministry of Education and Science of the Russian Federation of Russia and NRC KI, Russian Federation; Joint Institute for Nuclear Research; Ministry of Education, Science and Technological Development, Serbia; Ministry of Education, Science, Research and Sport, Slovakia; ARRS and MIZŠ, Slovenia; DST/NRF, South Africa; MINECO, Spain; Swedish Research Council and Wallenberg Foundation, Sweden; Secretariat for Education and Research, SNSF and Cantons of Bern and Geneva, Switzerland; MOST, Taiwan; TAEK, Turkey; STFC, United Kingdom; DOE and NSF, United States of America. In addition, individual groups and members have received support from BCKDF, CANARIE, CRC and Compute Canada, Canada; COST, ERC, ERDF, Horizon 2020, and Marie Skłodowska-Curie Actions, European Union; Investissements d’ Avenir Labex and Idex, ANR, France; DFG and AvH Foundation, Germany; Herakleitos, Thales and Aristeia programmes co-financed by EU-ESF and the Greek NSRF, Greece; BSF-NSF and GIF, Israel; CERCA Programme Generalitat de Catalunya, Spain; The Royal Society and Leverhulme Trust, United Kingdom.
A search for the decay of neutral, weakly interacting, long-lived particles using data collected by the ATLAS detector at the LHC is presented. The analysis in this paper uses 36.1 fb−1 of proton-proton collision data at s√=13 TeV recorded in 2015-2016. The search employs techniques for reconstructing vertices of long-lived particles decaying into jets in the muon spectrometer exploiting a two vertex strategy and a novel technique that requires only one vertex in association with additional activity in the detector that improves the sensitivity for longer lifetimes. The observed numbers of events are consistent with the expected background and limits for several benchmark signals are determined.