A search for charged massive long-lived particles

0380065 - FZÚ 2013 RIV US eng J - Journal Article
Abazov, V. M. - Abbott, B. - Acharya, B.S. - Kupčo, Alexander - Lokajíček, Miloš … Total 410 authors
A search for charged massive long-lived particles.
Physical Review Letters. Roč. 108, č. 12 (2012), "121802-1"-"121802-7". ISSN 0031-9007. E-ISSN 1079-7114
R&D Projects: GA MŠMT LA08047
Institutional research plan: CEZ:AV0Z10100502
Keywords : ionization energy loss * new particle * supersymmetry * anti-p p * Batavia TEVATRON Coll * D0
Subject RIV: BF - Elementary Particles and High Energy Physics
Impact factor: 7.943, year: 2012
http://prl.aps.org/abstract/PRL/v108/i12/e121802

We report on a search for charged massive long-lived particles (CMLLPs), based on 5.2 fb−1 of integrated luminosity collected with the D0 detector at the Fermilab Tevatron ppˉ collider. We search for events in which one or more particles are reconstructed as muons but have speed and ionization energy loss (dE/dx) inconsistent with muons produced in beam collisions. CMLLPs are predicted in several theories of physics beyond the standard model. We exclude pair-produced long-lived gaugino-like charginos below 267 GeV and higgsino-like charginos below 217 GeV at 95% C.L., as well as long-lived scalar top quarks with mass below 285 GeV.
Permanent Link: http://hdl.handle.net/11104/0210881