Szczegóły publikacji

Opis bibliograficzny

Search for supersymmetry in events containing a same-flavour opposite-sign dilepton pair, jets, and large missing transverse momentum in $\sqrt{s}$=8 TeV pp collisions with the ATLAS detector / G. Aad, [et al.], L. ADAMCZYK, [et al.], T. BOŁD, [et al.], W. DĄBROWSKI, [et al.], M. DWUŻNIK, M. DYNDAŁ, [et al.], I. GRABOWSKA-BOŁD, [et al.], D. KISIELEWSKA, [et al.], S. KOPERNY, T. Z. KOWALSKI, [et al.], B. MINDUR, [et al.], M. PRZYBYCIEŃ, [et al.], A. ZEMŁA, [et al.] // The European Physical Journal. C, Particles and Fields ; ISSN 1434-6044. — 2015 — vol. 75 iss. 7 art. no. 318, s. 1–40. — Bibliogr. s. 26–28, Abstr.

Autorzy (3000)

Dane bibliometryczne

ID BaDAP91260
Data dodania do BaDAP2015-09-01
Tekst źródłowyURL
DOI10.1140/epjc/s10052-015-3518-2
Rok publikacji2015
Typ publikacjiartykuł w czasopiśmie
Otwarty dostęptak
Czasopismo/seriaEuropean Physical Journal, C

Abstract

Two searches for supersymmetric particles in final states containing a same-flavour opposite-sign lepton pair, jets and large missing transverse momentum are presented. The proton-proton collision data used in these searches were collected at a centre-of-mass energy root s = 8TeV by the ATLAS detector at the Large Hadron Collider and corresponds to an integrated luminosity of 20.3 fb(-1). Two leptonic production mechanisms are considered: decays of squarks and gluinos with Z bosons in the final state, resulting in a peak in the dilepton invariant mass distribution around the Z-boson mass; and decays of neutralinos (e.g.. (chi) over tilde (0)(2) -> l(+)l(-) (chi) over tilde (0)(1)), resulting in a kinematic endpoint in the dilepton invariant mass distribution. For the former, an excess of events above the expected Standard Model background is observed, with a significance of three standard deviations. In the latter case, the data are well-described by the expected Standard Model background. The results from each channel are interpreted in the context of several supersymmetric models involving the production of squarks and gluinos.

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