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Predictions for Supersymmetric Particle Masses using Indirect Experimental and Cosmological Constraints
/ Buchmüller, O L (CERN) ; Cavanaugh, R (Fermilab, Batavia, IL, USA ; Univ. Illinois, Chicago, IL, USA) ; de Roeck, A (CERN ; Antwerp Univ., Wilrijk, Belgium) ; Ellis, Jonathan Richard (CERN) ; Flächer, H (CERN) ; Heinemeyer, S (Inst. Física de Cantabria (CSIC-UC), Santander, Spain) ; Isidori, G (INFN, LNF, Frascati, Italy ; Scuola Norm. Sup., Pisa, Italy) ; Olive, K A (School Phys. Astron., Univ. Minnesota, Minneapolis, MN, USA) ; Paradisi, P (Tech. Univ. München, Garching, Germany) ; Ronga, F J (ETH Zürich, Switzerland) et al.
In view of the imminent start of the LHC experimental programme, we use the available indirect experimental and cosmological information to estimate the likely range of parameters of the constrained minimal supersymmetric extension of the Standard Model (CMSSM), using a Markov-chain Monte Carlo (MCMC) technique to sample the parameter space. The 95% confidence-level area in the (m_0, m_1/2) plane of the CMSSM lies largely within the region that could be explored with 1/fb of integrated luminosity at 14 TeV, and much of the 68% confidence-level area lies within the region that could be explored with 50/pb of integrated luminosity at 10 TeV. [...]
arXiv:0808.4128; CERN-PH-TH-2008-181.-
Geneva : CERN, 2008 - 19 p.
- Published in : JHEP 09 (2008) 117
SISSA/IOP Open Access article: PDF; External link: Fulltext
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Electric Dipole Moments in the MSSM Reloaded
/ Ellis, Jonathan Richard (CERN) ; Lee Jae Sik (NCTS, Hsinchu ; Taiwan, Natl. Central U. ; Taiwan, Inst. Phys.) ; Pilaftsis, Apostolos (Manchester U.)
We present a detailed study of the Thallium, neutron, Mercury and deuteron electric dipole moments (EDMs) in the CP-violating Minimal Supersymmetric extension of the Standard Model (MSSM). We take into account the complete set of one-loop graphs, the dominant Higgs-mediated two-loop diagrams, the complete CP-odd dimension-six Weinberg operator and the Higgs-mediated four-fermion operators. [...]
arXiv:0808.1819; CERN-PH-TH-2008-175; MAN-HEP-2008-22.-
Geneva : CERN, 2008 - 61 p.
- Published in : JHEP 10 (2008) 049
SISSA/IOP Open Access article: PDF; External link: Preprint
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Sivers Asymmetries for Inclusive Pion and Kaon Production in Deep-Inelastic Scattering
/ Ellis, Jonathan Richard (CERN) ; Hwang, Dae Sung (Sejong Univ., Seoul, South Korea) ; Kotzinian, Aram (CEA DAPNIA/SPhN Saclay, Gif-sur-Yvette, France ; JINR, Dubna, Russia ; Yerevan Phys. Inst., Yerevan, Armenia)
We calculate the Sivers distribution functions induced by the final-state interaction due to one-gluon exchange in diquark models of nucleon structure, treating the cases of scalar and axial-vector diquarks with both dipole and Gaussian form factors. We use these distribution functions to calculate the Sivers single-spin asymmetries for inclusive pion and kaon production in deep-inelastic scattering. [...]
arXiv:0808.1567; CERN-PH-TH-2008-173.-
Geneva : CERN, 2009 - 31 p.
- Published in : Phys. Rev. D 80 (2009) 074033
APS Published version, local copy: PDF; External link: Preprint
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Against Tachyophobia
/ Ellis, Jonathan Richard (CERN) ; Giedt, Joel (Rensselaer Poly.) ; Lebedev, Oleg (CERN) ; Olive, Keith (Minnesota U., Theor. Phys. Inst.) ; Srednicki, Mark (UC, Santa Barbara)
We examine the possible extension of the parameter space of the minimal supersymmetric extension of the Standard Model (MSSM), as expressed via the renormalization-group equations in terms of universal soft supersymmetry-breaking terms at the unification scale, to include tachyonic input scalar masses. Many models with negative masses-squared for scalars at the unification scale may be viable because the small sizes of the masses-squared allow them to change signs during the renormalization-group evolution to the electroweak scale. [...]
arXiv:0806.3648; CERN-PH-TH-2008-135.-
2008 - 24 p.
- Published in : Phys. Rev. D 78 (2008) 075006
APS Published version, local copy: PDF; External link: Fulltext
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