@misc{10481/76706,
year = {2022},
month = {4},
url = {http://hdl.handle.net/10481/76706},
abstract = {This search, a type not previously performed at ATLAS, uses a comparison of the production cross sections for e(+)mu(-) and e(-)mu(+) pairs to constrain physics processes beyond the Standard Model. It uses 139 fb(-1) of proton-proton collision data recorded at root s = 13 TeV at the LHC. Targeting sources of new physics which prefer final states containing e(+)mu(-) and e(-)mu(+), the search contains two broad signal regions which are used to provide model-independent constraints on the ratio of cross sections at the 2% level. The search also has two special selections targeting supersymmetric models and leptoquark signatures. Observations using one of these selections are able to exclude, at 95% confidence level, singly produced smuons with masses up to 640 GeV in a model in which the only other light sparticle is a neutralino when the R-parity-violating coupling lambda(23)(1)' is close to unity. Observations using the other selection exclude scalar leptoquarks with masses below 1880 GeV when g(1R)(eu) = g(1R)(mu c) = 1, at 95% confidence level. The limit on the coupling reduces to g(1R)(eu) = g(1R)(mu c) = 0.46 for a mass of 1420 GeV.},
organization = {ANPCyT, Argentina},
organization = {YerPhI, Armenia},
organization = {ARC, Australia},
organization = {BMWFW and FWF, Austria},
organization = {ANAS, Azerbaijan},
organization = {SSTC, Belarus},
organization = {CNPq and FAPESP, Brazil},
organization = {NSERC, NRC and CFI, Canada},
organization = {CERN},
organization = {ANID, Chile},
organization = {CAS, MOST and NSFC, China},
organization = {Min-ciencias, Colombia},
organization = {MEYS CR, Czech Republic},
organization = {DNRF and DNSRC, Denmark},
organization = {IN2P3-CNRS and CEA-DRF/IRFU, France},
organization = {SRNSFG, Georgia},
organization = {BMBF, HGF and MPG, Germany},
organization = {GSRI, Greece},
organization = {RGC and Hong Kong SAR, China},
organization = {ISF and Benoziyo Center, Israel},
organization = {INFN, Italy},
organization = {MEXT and JSPS, Japan},
organization = {CNRST, Morocco},
organization = {NWO, Netherlands},
organization = {RCN, Norway},
organization = {MEiN, Poland},
organization = {FCT, Portugal},
organization = {MNE/IFA, Romania},
organization = {JINR},
organization = {MES},
organization = {NRC KI, Russian Federation},
organization = {MESTD, Serbia},
organization = {MSSR, Slovakia},
organization = {ARRS and MIZŠ, Slovenia},
organization = {DSI/NRF, South Africa},
organization = {MICINN, Spain},
organization = {SRC and Wallenberg Foundation, Sweden},
organization = {SERI, SNSF, Canton of Bernand Canton of Geneva, Switzerland},
organization = {MOST, Taiwan},
organization = {TAEK, Turkey},
organization = {STFC, United Kingdom},
organization = {DOE and NSF, United States of America},
organization = {BCKDF, Canarie, Compute Canada and CCRC, Canada},
organization = {COST, ERC, ERDF, Horizon 2020 and Marie Skłodowska-Curie Actions, European Union},
organization = {Investissements d’Avenir Labex, In-vestissements d’Avenir Idex and ANR, France},
organization = {DFG and AvH Foun-dation, Germany},
organization = {Herakleitos, Thales programme and Aristeia pro-gramme co-financed by EU-ESF and the Greek NSRF, Greece},
organization = {BSF-NSF and GIF, Israel},
organization = {Norwegian Financial Mechanism 2014-2021, Norway},
organization = {NCN and NAWA, Poland},
organization = {La Caixa Banking Foundation},
organization = {CERCA Programme Generalitat de Catalunya and PROMETEO and GenT Programmes Generalitat Valenciana, Spain},
organization = {Göran Gustafs-sons Stiftelser, Sweden},
organization = {The Royal Society and Leverhulme Trust, United Kingdom.},
publisher = {Elsevier},
title = {A search for an unexpected asymmetry in the production of e(+)mu(-) and e(-)mu(+) pairs in proton-proton collisions recorded by the ATLAS detector at root s=13 TeV},
doi = {10.1016/j.physletb.2022.137106},
author = {Aad, G. and Aguilar Saavedra, Juan Antonio and Rodríguez Chala, Mikael and Atlas Collaboration},
}