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Uncovering Natural Supersymmetry via the interplay between the LHC and Direct Dark Matter Detection

Uncovering Natural Supersymmetry via the interplay between the LHC and Direct Dark Matter Detection
Uncovering Natural Supersymmetry via the interplay between the LHC and Direct Dark Matter Detection
We have explored Natural Supersymmetry (NSUSY) scenarios with low values of the μ parameter which are characterised by higgsino-like Dark Matter (DM) and compressed spectra for the lightest MSSM particles, χ 1 0 , χ 2 0 and χ 1 ± . This scenario could be probed via monojet signatures, but as the signal-to-background ratio (S/B) is low we demonstrate that the 8 TeV LHC cannot obtain limits on the DM mass beyond those of LEP2. On the other hand, we have found, for the 13 TeV run of the LHC, that by optimising kinematical cuts we can bring the S/B ratio up to the 5(3)% level which would allow the exclusion of the DM mass up to 200(250) GeV respectively, significantly extending LEP2 limits. Moreover, we have found that LUX/XENON1T and LHC do play very complementary roles in exploring the parameter space of NSUSY, as the LHC has the capability to access regions where DM is quasi-degenerate with other higgsinos, which are challenging for direct detection experiments.
Barducci, Daniele
d0289bdd-ac34-493c-95cd-36d811070ecc
Belyaev, Alexander
6bdb9638-5ff9-4b65-a8f2-34bae3ac34b3
Bharucha, Aoife K. M.
fbc0da78-df5d-4600-9019-81937f0b4e62
Porod, Werner
9b4fd032-fd01-49c0-9c87-8052ebc813b5
Sanz, Veronica
2a1822ba-8d8d-434a-ac9b-b7091a7c3440
Barducci, Daniele
d0289bdd-ac34-493c-95cd-36d811070ecc
Belyaev, Alexander
6bdb9638-5ff9-4b65-a8f2-34bae3ac34b3
Bharucha, Aoife K. M.
fbc0da78-df5d-4600-9019-81937f0b4e62
Porod, Werner
9b4fd032-fd01-49c0-9c87-8052ebc813b5
Sanz, Veronica
2a1822ba-8d8d-434a-ac9b-b7091a7c3440

Barducci, Daniele, Belyaev, Alexander, Bharucha, Aoife K. M., Porod, Werner and Sanz, Veronica (2015) Uncovering Natural Supersymmetry via the interplay between the LHC and Direct Dark Matter Detection. The Journal of High Energy Physics, 2015 (7), [66]. (doi:10.1007/JHEP07(2015)066).

Record type: Article

Abstract

We have explored Natural Supersymmetry (NSUSY) scenarios with low values of the μ parameter which are characterised by higgsino-like Dark Matter (DM) and compressed spectra for the lightest MSSM particles, χ 1 0 , χ 2 0 and χ 1 ± . This scenario could be probed via monojet signatures, but as the signal-to-background ratio (S/B) is low we demonstrate that the 8 TeV LHC cannot obtain limits on the DM mass beyond those of LEP2. On the other hand, we have found, for the 13 TeV run of the LHC, that by optimising kinematical cuts we can bring the S/B ratio up to the 5(3)% level which would allow the exclusion of the DM mass up to 200(250) GeV respectively, significantly extending LEP2 limits. Moreover, we have found that LUX/XENON1T and LHC do play very complementary roles in exploring the parameter space of NSUSY, as the LHC has the capability to access regions where DM is quasi-degenerate with other higgsinos, which are challenging for direct detection experiments.

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More information

Accepted/In Press date: 26 May 2015
e-pub ahead of print date: 14 July 2015
Published date: 14 July 2015
Organisations: Physics & Astronomy

Identifiers

Local EPrints ID: 407091
URI: http://eprints.soton.ac.uk/id/eprint/407091
PURE UUID: 9941349b-aaaf-4785-884e-193011201eab
ORCID for Alexander Belyaev: ORCID iD orcid.org/0000-0002-1733-4408

Catalogue record

Date deposited: 29 Mar 2017 01:14
Last modified: 27 Jan 2020 13:42

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