dc.identifier.citation | Aaboud, M., Aad, G., Abbott, B., Abbott, D. C., Abdinov, O., Abeloos, B., ... & Abramowicz, H. (2019). Search for heavy charged long-lived particles in the ATLAS detector in 36.1 fb− 1 of proton-proton collision data at s= 13 TeV. Physical Review D, 99(9), 092007. | es_ES |
dc.description.abstract | A search for heavy charged long-lived particles is performed using a data sample of 36.1 fb−1 of proton-proton collisions at s√=13 TeV collected by the ATLAS experiment at the Large Hadron Collider. The search is based on observables related to ionization energy loss and time of flight, which are sensitive to the velocity of heavy charged particles traveling significantly slower than the speed of light. Multiple search strategies for a wide range of lifetimes, corresponding to path lengths of a few meters, are defined as model-independently as possible, by referencing several representative physics cases that yield long-lived particles within supersymmetric models, such as gluinos/squarks (R-hadrons), charginos and staus. No significant deviations from the expected Standard Model background are observed. Upper limits at 95% confidence level are provided on the production cross sections of long-lived R-hadrons as well as directly pair-produced staus and charginos. These results translate into lower limits on the masses of long-lived gluino, sbottom and stop R-hadrons, as well as staus and charginos of 2000 GeV, 1250 GeV, 1340 GeV, 430 GeV and 1090 GeV, respectively. | es_ES |
dc.description.sponsorship | We acknowledge the support of ANPCyT, Argentina;
YerPhI, Armenia; ARC, Australia; BMWFW 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 and DNSRC, Denmark;
IN2P3-CNRS, CEA-DRF/IRFU, France; SRNSFG,
Georgia; BMBF, HGF, and MPG, Germany; GSRT,
Greece; RGC, Hong Kong SAR, China; ISF and
Benoziyo Center, Israel; INFN, Italy; MEXT and JSPS,
Japan; CNRST, Morocco; NWO, Netherlands; RCN,
Norway; MNiSW and NCN, Poland; FCT, Portugal;
MNE/IFA, Romania; MES of Russia and NRC KI,
Russian Federation; JINR; MESTD, Serbia; MSSR,
Slovakia; ARRS and MIZŚ, Slovenia; DST/NRF, South
Africa; MINECO, Spain; SRC andWallenberg Foundation,
Sweden; SERI, 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. | es_ES |