Early SUSY discovery at LHC without missing E_T: the role of multi-leptons
| dc.creator | Baer, Howard | |
| dc.creator | Prosper, Harrison | |
| dc.creator | Summy, Heaya | |
| dc.date | 2008-01-24 | |
| dc.date | 2008-02-15 | |
| dc.date.accessioned | 2026-07-07T11:55:31Z | |
| dc.date.available | 2026-07-07T11:55:31Z | |
| dc.description | Traditional searches for SUSY at hadron colliders rely heavily on the presence of large missing transverse energy (ME_T) to reject background compared to signal. On the other hand, initial searches for new physics at the LHC may not be able to rely on ME_T due to a variety of detector calibration issues. We show that much of SUSY parameter space is accessible to discovery even {\it without} using ME_T, and with rather low integrated luminosities 0.1-1 fb^{-1}. A key role is played by isolated lepton multiplicity which arises from gluino and squark cascade decays. Requiring \ge 3 isolated leptons plus jets yields a high rate of background rejection compared to signal. We find an LHC reach in m(gluino) of about 700-750 GeV for just 0.1 fb^{-1} of integrated luminosity by requiring events with \ge 4 jets plus \ge 3 isolated leptons but {\it without} using ME_T. If a large enough event sample is assembled, then kinematic reconstruction of sparticle mass properties should be possible just as in the case where large ME_T is required. SUSY without ME_T can also be seen in opposite-sign/same flavor {\it dilepton plus jets} events when a characteristic invariant mass edge stands out against background. | |
| dc.description | 13 pages including 9 eps figures. Version 2 has just one added citation | |
| dc.identifier | https://arxiv.org/abs/0801.3799 | |
| dc.identifier | http://arxiv.org/abs/0801.3799 | |
| dc.identifier | Phys.Rev.D77:055017,2008 | |
| dc.identifier | doi:10.1103/PhysRevD.77.055017 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/205271 | |
| dc.subject | High Energy Physics - Phenomenology | |
| dc.subject | High Energy Physics - Experiment | |
| dc.title | Early SUSY discovery at LHC without missing E_T: the role of multi-leptons | |
| dc.type | text |