Flavour violating up-squark decays at LHC

Autor(en)

Helmut Eberl, Alfred Bartl, Björn Herrmann, Keisho Hidaka, Walter Majerotto, Werner Porod

Abstrakt

We study the effect of squark generation mixing on squark production and decays at the LHC in the Minimal Supersymmetric Standard Model (MSSM). We show that the effect can be very large despite the very strong constraints on quark flavour violation (QFV) from experimental data on B mesons. We find that the two lightest up-type squarks (u) over tilde (1,2) can have large branching ratios for the decays into c (chi) over tilde (0)(1) and t (chi) over tilde (0)(1) at the same time, leading to QFV signals 'pp -> c (t) over bar (t (c) over bar) + missing-E(T) + X' with a significant rate. The observation of this remarkable signature would provide a powerful test of supersymmetric QFV at LHC. This could have a significant impact on the search for squarks and the determination of the underlying MSSM parameters.

Organisation(en)

Teilchenphysik

Externe Organisation(en)

Österreichische Akademie der Wissenschaften (ÖAW), Deutsches Elektronen-Synchrotron DESY, Tokyo Gakugei University (TGU), Julius-Maximilians-Universität Würzburg

Journal

Fortschritte der Physik

Band

59

Seiten

1075-1078

Anzahl der Seiten

4

ISSN

0015-8208

DOI

https://doi.org/10.1002/prop.201100061

Publikationsdatum

2011

Peer-reviewed

Ja

ÖFOS 2012

103012 Hochenergiephysik, 103034 Teilchenphysik

Link zum Portal

https://ucrisportal.univie.ac.at/de/publications/flavour-violating-upsquark-decays-at-lhc(27035e67-5a62-4495-995a-1561e550db2d).html