TY  - JOUR
A1  - Dreiner, Herbi K.
A1  - Krauss, Manuel E.
A1  - O'Leary, Ben
A1  - Opferkuch, Toby
A1  - Staub, Florian
T1  - Validity of the CMSSM interpretation of the diphoton excess
JF  - Physical Review D
N2  - It has been proposed that the observed diphoton excess at 750 GeV could be explained within the constrained minimal supersymmetric standard model via resonantly produced stop bound states. We reanalyze this scenario critically and extend previous work to include the constraints from the stability of the electroweak vacuum and from the decays of the stoponium into a pair of Higgs bosons. It is shown that the interesting regions of parameter space with a light stop and Higgs of the desired mass are ruled out by these constraints. This conclusion is not affected by the presence of the bound states because the binding energy is usually very small in the regions of parameter space which can explain the Higgs mass. Thus, this also leads to strong constraints on the diphoton production cross section which is in general too small.
KW  - Minimal supersymmetric model
KW  - 2-loop level
KW  - Bound-states
KW  - Higgs-boson
KW  - MSSM
KW  - Mass
KW  - Spheno
KW  - Sarah
KW  - Spectrum
KW  - Breaking
Y1  - 2016
U6  - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:bvb:20-opus-187429
VL  - 94
IS  - 5
ER  - 
TY  - JOUR
A1  - Bechtle, Philip
A1  - Bringmann, Torsten
A1  - Desch, Klaus
A1  - Dreiner, Herbi
A1  - Hamer, Matthias
A1  - Hensel, Carsten
A1  - Krämer, Michael
A1  - Nguyen, Nelly
A1  - Porod, Werner
A1  - Prudent, Xavier
A1  - Sarrazin, Björn
A1  - Uhlenbrock, Mathias
A1  - Wienemann, Peter
T1  - Constrained supersymmetry after two years of LHC data: a global view with Fittino
JF  - Journal of High Energy Physics
N2  - We perform global fits to the parameters of the Constrained Minimal Super-symmetric Standard Model (CMSSM) and to a variant with non-universal Higgs masses (NUHM1). In addition to constraints from low-energy precision observables and the cosmological dark matter density, we take into account the LHC exclusions from searches in jets plus missing transverse energy signatures with about 5 fb\(^{−1}\) of integrated luminosity. We also include the most recent upper bound on the branching ratio B\(_s\)  → μμ from LHCb. Furthermore, constraints from and implications for direct and indirect dark matter searches are discussed. The best fit of the CMSSM prefers a light Higgs boson just above the experimentally excluded mass. We find that the description of the low-energy observables, (g − 2)\(_μ\) in particular, and the non-observation of SUSY at the LHC become more and more incompatible within the CMSSM. A potential SM-like Higgs boson with mass around 126 GeV can barely be accommodated. Values for B(B\(_s\)→μμ) just around the Standard Model prediction are naturally expected in the best fit region. The most-preferred region is not yet affected by limits on direct WIMP searches, but the next generation of experiments will probe this region. Finally, we discuss implications from fine-tuning for the best fit regions.
KW  - supersymmetry phenomenology
Y1  - 2012
U6  - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:bvb:20-opus-129573
VL  - 06
IS  - 098
ER  -