Abstract
Split supersymmetry (SUSY) — in which SUSY is relevant to our universe but largely inaccessible at current accelerators — has become increasingly plausible given the absence of new physics at the LHC, the success of gauge coupling unification, and the observed Higgs mass. Indirect probes of split SUSY such as electric dipole moments (EDMs) and flavor violation offer hope for further evidence but are ultimately limited in their reach. Inflation offers an alternate window into SUSY through the direct production of superpartners during inflation. These particles are capable of leaving imprints in future cosmological probes of primordial non-gaussianity. Given the recent observations of BICEP2, the scale of inflation is likely high enough to probe the full range of split SUSY scenarios and therefore offers a unique advantage over low energy probes. The key observable for future experiments is equilateral non-gaussianity, which will be probed by both cosmic microwave background (CMB) and large scale structure (LSS) surveys. In the event of a detection, we forecast our ability to find evidence for superpartners through the scaling behavior in the squeezed limit of the bispectrum.
Article PDF
Similar content being viewed by others
Avoid common mistakes on your manuscript.
References
BICEP2 collaboration, P.A.R. Ade et al., Detection of B-Mode Polarization at Degree Angular Scales by BICEP2, Phys. Rev. Lett. 112 (2014) 241101 [arXiv:1403.3985] [INSPIRE].
S. Dimopoulos, S. Raby and F. Wilczek, Supersymmetry and the Scale of Unification, Phys. Rev. D 24 (1981) 1681 [INSPIRE].
R. Kallosh and A.D. Linde, Landscape, the scale of SUSY breaking and inflation, JHEP 12 (2004) 004 [hep-th/0411011] [INSPIRE].
A.H. Guth, The Inflationary Universe: A Possible Solution to the Horizon and Flatness Problems, Phys. Rev. D 23 (1981) 347 [INSPIRE].
A.D. Linde, A New Inflationary Universe Scenario: A Possible Solution of the Horizon, Flatness, Homogeneity, Isotropy and Primordial Monopole Problems, Phys. Lett. B 108 (1982) 389 [INSPIRE].
A. Albrecht and P.J. Steinhardt, Cosmology for Grand Unified Theories with Radiatively Induced Symmetry Breaking, Phys. Rev. Lett. 48 (1982) 1220 [INSPIRE].
K.N. Abazajian et al., Inflation Physics from the Cosmic Microwave Background and Large Scale Structure, arXiv:1309.5381 [INSPIRE].
J.M. Maldacena, Non-Gaussian features of primordial fluctuations in single field inflationary models, JHEP 05 (2003) 013 [astro-ph/0210603] [INSPIRE].
P. Creminelli and M. Zaldarriaga, Single field consistency relation for the 3-point function, JCAP 10 (2004) 006 [astro-ph/0407059] [INSPIRE].
X. Chen and Y. Wang, Quasi-Single Field Inflation and Non-Gaussianities, JCAP 04 (2010) 027 [arXiv:0911.3380] [INSPIRE].
X. Chen and Y. Wang, Quasi-Single Field Inflation with Large Mass, JCAP 09 (2012) 021 [arXiv:1205.0160] [INSPIRE].
D. Green, M. Lewandowski, L. Senatore, E. Silverstein and M. Zaldarriaga, Anomalous Dimensions and Non-Gaussianity, JHEP 10 (2013) 171 [arXiv:1301.2630] [INSPIRE].
D. Baumann and D. Green, Signatures of Supersymmetry from the Early Universe, Phys. Rev. D 85 (2012) 103520 [arXiv:1109.0292] [INSPIRE].
J.D. Wells, PeV-scale supersymmetry, Phys. Rev. D 71 (2005) 015013 [hep-ph/0411041] [INSPIRE].
N. Arkani-Hamed and S. Dimopoulos, Supersymmetric unification without low energy supersymmetry and signatures for fine-tuning at the LHC, JHEP 06 (2005) 073 [hep-th/0405159] [INSPIRE].
G.F. Giudice and A. Romanino, Split supersymmetry, Nucl. Phys. B 699 (2004) 65 [Erratum ibid. B 706 (2005) 65-89] [hep-ph/0406088] [INSPIRE].
N. Arkani-Hamed, Minimally Split SUSY, talk at SavasFest (2012), Bechtel Conference Center, Encina Hall, Stanford University, 18-19 May 2012, www.stanford.edu/dept/physics/events/2012/SavasFest/slides/Nima%20Arkani-Hamed.pdf.
A. Arvanitaki, N. Craig, S. Dimopoulos and G. Villadoro, Mini-Split, JHEP 02 (2013) 126 [arXiv:1210.0555] [INSPIRE].
N. Arkani-Hamed, A. Gupta, D.E. Kaplan, N. Weiner and T. Zorawski, Simply Unnatural Supersymmetry, arXiv:1212.6971 [INSPIRE].
V. Assassi, D. Baumann, D. Green and L. McAllister, Planck-Suppressed Operators, arXiv:1304.5226 [INSPIRE].
L. Iliesiu, D.J.E. Marsh, K. Moodley and S. Watson, Constraining SUSY with Heavy Scalars: using the CMB, Phys. Rev. D 89 (2014) 103513 [arXiv:1312.3636] [INSPIRE].
Particle Data Group collaboration, J. Beringer et al., Review of Particle Physics (RPP), Phys. Rev. D 86 (2012) 010001 [INSPIRE].
G.F. Giudice and A. Strumia, Probing High-Scale and Split Supersymmetry with Higgs Mass Measurements, Nucl. Phys. B 858 (2012) 63 [arXiv:1108.6077] [INSPIRE].
C. Cheung, L.J. Hall, D. Pinner and J.T. Ruderman, Prospects and Blind Spots for Neutralino Dark Matter, JHEP 05 (2013) 100 [arXiv:1211.4873] [INSPIRE].
T. Cohen, M. Lisanti, A. Pierce and T.R. Slatyer, Wino Dark Matter Under Siege, JCAP 10 (2013) 061 [arXiv:1307.4082] [INSPIRE].
J. Fan and M. Reece, In Wino Veritas? Indirect Searches Shed Light on Neutralino Dark Matter, JHEP 10 (2013) 124 [arXiv:1307.4400] [INSPIRE].
P. Fox, A. Pierce and S.D. Thomas, Probing a QCD string axion with precision cosmological measurements, hep-th/0409059 [INSPIRE].
ACME collaboration, J. Baron et al., Order of Magnitude Smaller Limit on the Electric Dipole Moment of the Electron, Science 343 (2014) 269 [arXiv:1310.7534] [INSPIRE].
D. McKeen, M. Pospelov and A. Ritz, Electric dipole moment signatures of PeV-scale superpartners, Phys. Rev. D 87 (2013) 113002 [arXiv:1303.1172] [INSPIRE].
W. Altmannshofer, R. Harnik and J. Zupan, Low Energy Probes of PeV Scale Sfermions, JHEP 11 (2013) 202 [arXiv:1308.3653] [INSPIRE].
UTfit collaboration, M. Bona et al., Model-independent constraints on ΔF = 2 operators and the scale of new physics, JHEP 03 (2008) 049 [arXiv:0707.0636] [INSPIRE].
D. Baumann and D. Green, Supergravity for Effective Theories, JHEP 03 (2012) 001 [arXiv:1109.0293] [INSPIRE].
D.H. Lyth, What would we learn by detecting a gravitational wave signal in the cosmic microwave background anisotropy?, Phys. Rev. Lett. 78 (1997) 1861 [hep-ph/9606387] [INSPIRE].
D. Baumann and D. Green, A Field Range Bound for General Single-Field Inflation, JCAP 05 (2012) 017 [arXiv:1111.3040] [INSPIRE].
C. Cheung, P. Creminelli, A.L. Fitzpatrick, J. Kaplan and L. Senatore, The Effective Field Theory of Inflation, JHEP 03 (2008) 014 [arXiv:0709.0293] [INSPIRE].
L. Senatore and M. Zaldarriaga, The Effective Field Theory of Multifield Inflation, JHEP 04 (2012) 024 [arXiv:1009.2093] [INSPIRE].
E. Sefusatti, M. Liguori, A.P.S. Yadav, M.G. Jackson and E. Pajer, Constraining Running Non-Gaussianity, JCAP 12 (2009) 022 [arXiv:0906.0232] [INSPIRE].
J.J.M. Carrasco, S. Foreman, D. Green and L. Senatore, The Effective Field Theory of Large Scale Structures at Two Loops, arXiv:1310.0464 [INSPIRE].
E. Sefusatti, J.R. Fergusson, X. Chen and E.P.S. Shellard, Effects and Detectability of Quasi-Single Field Inflation in the Large-Scale Structure and Cosmic Microwave Background, JCAP 08 (2012) 033 [arXiv:1204.6318] [INSPIRE].
Planck collaboration, P.A.R. Ade et al., Planck 2013 Results. XXIV. Constraints on primordial non-Gaussianity, arXiv:1303.5084 [INSPIRE].
CMBPol Study Team collaboration, D. Baumann et al., CMBPol Mission Concept Study: Probing Inflation with CMB Polarization, AIP Conf. Proc. 1141 (2009) 10 [arXiv:0811.3919] [INSPIRE].
J. Norena, L. Verde, G. Barenboim and C. Bosch, Prospects for constraining the shape of non-Gaussianity with the scale-dependent bias, JCAP 08 (2012) 019 [arXiv:1204.6324] [INSPIRE].
R. Scoccimarro, E. Sefusatti and M. Zaldarriaga, Probing primordial non-Gaussianity with large-scale structure, Phys. Rev. D 69 (2004) 103513 [astro-ph/0312286] [INSPIRE].
D. Babich, P. Creminelli and M. Zaldarriaga, The shape of non-Gaussianities, JCAP 08 (2004) 009 [astro-ph/0405356] [INSPIRE].
EUCLID collaboration, R. Laureijs et al., Euclid Definition Study Report, arXiv:1110.3193 [INSPIRE].
N. Dalal, O. Dore, D. Huterer and A. Shirokov, The imprints of primordial non-Gaussianities on large-scale structure: scale dependent bias and abundance of virialized objects, Phys. Rev. D 77 (2008) 123514 [arXiv:0710.4560] [INSPIRE].
F. Schmidt and M. Kamionkowski, Halo Clustering with Non-Local Non-Gaussianity, Phys. Rev. D 82 (2010) 103002 [arXiv:1008.0638] [INSPIRE].
T. Baldauf, U. Seljak and L. Senatore, Primordial non-Gaussianity in the Bispectrum of the Halo Density Field, JCAP 04 (2011) 006 [arXiv:1011.1513] [INSPIRE].
V. Assassi, D. Baumann and D. Green, On Soft Limits of Inflationary Correlation Functions, JCAP 11 (2012) 047 [arXiv:1204.4207] [INSPIRE].
R. Holman and A.J. Tolley, Enhanced Non-Gaussianity from Excited Initial States, JCAP 05 (2008) 001 [arXiv:0710.1302] [INSPIRE].
J. Ganc, Calculating the local-type fNL for slow-roll inflation with a non-vacuum initial state, Phys. Rev. D 84 (2011) 063514 [arXiv:1104.0244] [INSPIRE].
D. Chialva, Signatures of very high energy physics in the squeezed limit of the bispectrum (violation of Maldacena’s condition), JCAP 10 (2012) 037 [arXiv:1108.4203] [INSPIRE].
R. Flauger, D. Green and R.A. Porto, On squeezed limits in single-field inflation. Part I, JCAP 08 (2013) 032 [arXiv:1303.1430] [INSPIRE].
A. Aravind, D. Lorshbough and S. Paban, Non-Gaussianity from Excited Initial Inflationary States, JHEP 07 (2013) 076 [arXiv:1303.1440] [INSPIRE].
S.M. Barr and A. Zee, Electric Dipole Moment of the Electron and of the Neutron, Phys. Rev. Lett. 65 (1990) 21 [Erratum ibid. 65 (1990) 2920] [INSPIRE].
Open Access
This article is distributed under the terms of the Creative Commons Attribution License (CC-BY 4.0), which permits any use, distribution and reproduction in any medium, provided the original author(s) and source are credited.
Author information
Authors and Affiliations
Corresponding author
Additional information
ArXiv ePrint: 1403.7193
Rights and permissions
Open Access This article is distributed under the terms of the Creative Commons Attribution 4.0 International License (https://creativecommons.org/licenses/by/4.0), which permits use, duplication, adaptation, distribution, and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made.
About this article
Cite this article
Craig, N., Green, D. Testing split supersymmetry with inflation. J. High Energ. Phys. 2014, 102 (2014). https://doi.org/10.1007/JHEP07(2014)102
Received:
Revised:
Accepted:
Published:
DOI: https://doi.org/10.1007/JHEP07(2014)102