Testing the gaugino AMSB model at the Tevatron via slepton pair production

Baer, Howard; Alwis, S.P. de; Givens, Kevin; Rajagopalan, S.; Sreethawong, Warintorn

doi:10.1007/jhep01(2011)005

Cited by 4 publications

(5 citation statements)

References 61 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The phenomenology is clearly quite sensitive to the model parameters (fluxes choices). This is quite unlike the case of LVS models where with a few general assumptions about the location of the MSSM a viable phenomenology is obtained [6][7] [8][9] [10]. While the original motivation for this investigation was in fact to remove the requirement on the location on the MSSM cycle, that is needed in the LVS case, to satisfy FCNC constraints, the upshot of our investigation actually strengthens the case for this scenario.…”

Section: Resultsmentioning

confidence: 62%

“…( 14) into eqn. (10) with F S = F U = 0, we compute the scalar potential for this model and expand in negative powers of the volume. For large volumes the potential can be safely approximated by…”

Section: Analytic Resultsmentioning

confidence: 99%

“…We have demonstrated that there exists physically plausible vacua coming from IIB string compactifications on Calabi-Yau orientifolds having one Kähler modulus together with fluxes and D-Branes. Such models have natural FCNC suppression due to the fact that they contain only one Kähler modulus 10 . In the simplest model, (eqns.…”

Section: Discussionmentioning

confidence: 99%

“…Consistency of the two super-covariant derivative expansion when the lightest integrated-out scale is the Kaluza-Klein scale requires |W 0 | < t −1/2 . This implies t O(10).…”

mentioning

confidence: 91%

“…Furthermore it can be argued that the phenomenological consequences (soft masses, etc.) are not strongly affected by the mechanism by which the CC is ultimately uplifted to positive values [6] [7][8] [9] [10]. In LVS, the compact volume is a so called Swiss Cheese manifold, with one large Kähler modulus and one (or more) smaller Kähler moduli 1 .…”

Section: Introductionmentioning

confidence: 99%

See 4 more Smart Citations

Physical vacua in IIB compactifications with a single Kähler modulus

Alwis

Givens

2011

J. High Energ. Phys.

Self Cite

View full text Add to dashboard Cite

show abstract

Section: Resultsmentioning

confidence: 62%

Section: Analytic Resultsmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

“…Consistency of the two super-covariant derivative expansion when the lightest integrated-out scale is the Kaluza-Klein scale requires |W 0 | < t −1/2 . This implies t O(10).…”

mentioning

confidence: 91%

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Physical vacua in IIB compactifications with a single Kähler modulus

Alwis

Givens

2011

J. High Energ. Phys.

Self Cite

View full text Add to dashboard Cite

show abstract

Supersymmetry, naturalness and light higgsinos

Mustafayev

Tata

2014

Indian J Phys

View full text Add to dashboard Cite

We compare and contrast three different sensitivity measures, ∆ −1 EW , ∆ −1 HS and ∆ −1 BG that have been used in discussions of fine-tuning. We argue that though not a fine-tuning measure, ∆ EW , which is essentially determined by the particle spectrum, is important because ∆ −1 EW quantifies the minimum fine-tuning present in any theory with a specified spectrum. We emphasize the critical role of incorporating correlations between various model parameters in discussions of fine-tuning. We provide toy examples to show that if we can find high scale theories with specific correlations amongst parameters, the value of the traditional fine-tuning measure ∆ −1 BG (which differs significantly from ∆ −1 HS only when these correlations are important) would be close to ∆ −1 EW . We then set up the radiatively driven natural SUSY framework that we advocate for phenomenological analyses of natural models of supersymmetry, and review the implications of naturalness for LHC and ILC searches for SUSY as well as for searches for SUSY dark matter.

show abstract

Mixed axion/neutralino cold dark matter in supersymmetric models

Baer¹,

Lessa²,

Rajagopalan³

et al. 2011

J. Cosmol. Astropart. Phys.

Self Cite

117

142

View full text Add to dashboard Cite

We consider supersymmetric (SUSY) models wherein the strong CP problem is solved by the Peccei-Quinn (PQ) mechanism with a concommitant axion/axino supermultiplet. We examine R-parity conserving models where the neutralino is the lightest SUSY particle, so that a mixture of neutralinos and axions serve as cold dark matter (a Z 1 CDM). The mixed a Z 1 CDM scenario can match the measured dark matter abundance for SUSY models which typically give too low a value of the usual thermal neutralino abundance, such as models with wino-like or higgsino-like dark matter. The usual thermal neutralino abundance can be greatly enhanced by the decay of thermally-produced axinos (ã) to neutralinos, followed by neutralino re-annihilation at temperatures much lower than freeze-out. In this case, the relic density is usually neutralino dominated, and goes as ∼ (f a /N )/m 3/2 a . If axino decay occurs before neutralino freeze-out, then instead the neutralino abundance can be augmented by relic axions to match the measured abundance. Entropy production from late-time axino decays can diminish the axion abundance, but ultimately not the neutralino abundance. In a Z 1 CDM models, it may be possible to detect both a WIMP and an axion as dark matter relics. We also discuss possible modifications of our results due to production and decay of saxions. In the appendices, we present expressions for the Hubble expansion rate and the axion and neutralino relic densities in radiation, matter and decaying-particle dominated universes.

show abstract

Testing the gaugino AMSB model at the Tevatron via slepton pair production

Cited by 4 publications

References 61 publications

Physical vacua in IIB compactifications with a single Kähler modulus

Physical vacua in IIB compactifications with a single Kähler modulus

Supersymmetry, naturalness and light higgsinos

Mixed axion/neutralino cold dark matter in supersymmetric models

Contact Info

Product

Resources

About