Search for direct chargino production in anomaly-mediated supersymmetry breaking models based on a disappearing-track signature in pp collisions at sqrt(s)=7 TeV with the ATLAS detector
Unknown, Article, Preprint
- Publisher: SISSA 2013
(issn: 1029-8479, eissn: 1029-8479)
QC | 530 | :Matematikk og naturvitenskap: 400::Fysikk: 430::Kjerne- og elementærpartikkelfysikk: 431 [VDP] | Science & Technology | Física | :Mathematics and natural scienses: 400::Physics: 430::Nuclear and elementary particle physics: 431 [VDP] | Particle Physics - Experiment | High Energy Physics - Experiment | 530 Physics | Hadron-hadron scattering | Nuclear and High Energy Physics
A search for direct chargino production in anomaly-mediated supersymmetry
breaking scenarios is performed in pp collisions at √
s = 7 TeV using 4.7 fb−1 of data
collected with the ATLAS experiment at the LHC. In these models, the lightest chargino
is predicted to have a lifetime long enough to be detected in the tracking detectors of
collider experiments. This analysis explores such models by searching for chargino decays
that result in tracks with few associated hits in the outer region of the tracking system.
The transverse-momentum spectrum of candidate tracks is found to be consistent with the
expectation from the Standard Model background processes and constraints on chargino
properties are obtained.
We acknowledge the support of ANPCyT, Argentina; YerPhI, Armenia; ARC, Australia; BMWF and FWF, Austria; ANAS, Azerbaijan; SSTC, 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, DNSRC and Lundbeck Foundation, Denmark; EPLANET and ERC, European Union; IN2P3-CNRS, CEA-DSM/IRFU, France; GNSF, Georgia; BMBF, DFG, HGF, MPG and AvH Foundation, Germany; GSRT, Greece; ISF, MINERVA, GIF, DIP and Benoziyo Center, Israel; INFN, Italy; MEXT and JSPS, Japan; CNRST, Morocco; FOM and NWO, Netherlands; BRF and RCN, Norway; MNiSW, Poland; GRICES and FCT, Portugal; MERYS (MECTS), Romania; MES of Russia and ROSATOM, Russian Federation; JINR; MSTD, Serbia; MSSR, Slovakia; ARRS and MVZT, Slovenia; DST/NRF, South Africa; MICINN, Spain; SRC and Wallenberg Foundation, Sweden; SER, SNSF and Cantons of Bern and Geneva, Switzerland; NSC, Taiwan; TAEK, Turkey; STFC, the Royal Society and Leverhulme Trust, United Kingdom; DOE and NSF, United States of America.