Phenomenology 2013 Symposium

Session

DM II

7 May 2013, 14:00

University of Pittsburgh

Conveners

DM II

• Chris Purcell (University of Pittsburgh)

151. Correlating Direct and Indirect Detection: Inelastic Scattering and Constraints on Dark-Sector Instability

David Yaylali (U)

07/05/2013, 14:00

Recent developments have suggested that the dark sector may be much more complex than previously imagined. As a result, models such as Dynamical Dark Matter --- in which there are multiple semi-stable dark matter components which contribute non-trivially to $\Omega_{\rm CDM}$ --- merit further study. One interesting potential signal which arises in such contexts stems from the possibility of...

150. Universal behavior in the scattering of heavy, weakly interacting dark matter on nuclear targets

Mikhail Solon (University of Chicago)

07/05/2013, 14:15

Particles that are heavy compared to the electroweak scale ($M \gg m_W$), and that are charged under electroweak SU(2) gauge interactions display universal properties such as a characteristic fine structure in the mass spectrum induced by electroweak symmetry breaking, and an approximately universal cross section for scattering on nuclear targets. The heavy particle effective theory framework...

117. Dark Matter Results from CMS

Sudhir Malik (University of Nebraska (US))

07/05/2013, 14:30

The latest Dark Matter results from CMS are presented, including final states with monojets, monophotons, and monoleptons.

164. Searches for Multiple Species of Dark Matter at the LHC

Christopher Redino (S)

07/05/2013, 14:45

The motivations and prospects for detecting separately identifiable dark matter candidates in a SUSY framework at the LHC are discussed. The majority of SUSY parameter space does not predict neutralinos that match the observed dark matter relic abundance, but a second candidate can easily be introduced. This parameter space is interesting because it contains models with a low amount of...

163. Phenomenological Implications of Dynamical Dark Matter

Dr Brooks Thomas (University of Hawaii)

07/05/2013, 15:00

Dynamical dark matter (DDM) is an alternative framework for dark-matter physics in which the requirement of stability is replaced by a balancing between lifetimes and cosmological abundances across a vast ensemble of individual dark-matter components. Such ensembles not only imply a highly non-trivial cosmology, but also give rise to a set of characteristic and often striking experimental...

37. Spin Determination with Invisible Particles

Daniel Salmon

07/05/2013, 15:15

General calculations concerning the kinematics of massive unobserved particles in the final state are discussed. We then apply these calculations to a method that allows one to determine the spin of such particles that escape direct detection. From this context, an analysis of the ability of a lepton collider to determine the spin of a dark matter candidate, such as a weakly interacting massive...

96. Monojets: Faster, Higher, Stronger

James Gainer (University of Florida)

07/05/2013, 15:30

We examine a parameterization of the monojet cross section at the CERN Large Hadron Collider in terms of the cross sections for relevant leading order 2 -> 2 processes. We compare these results with those obtained from an effective field theory description and study the use of such a parameterization to quickly eliminate large swaths of SUSY parameter spaces.

23. Constraining models with a single additional electroweak scalar multiplet

Terry Pilkington (Carleton University)

07/05/2013, 15:45

Models with a single additional electroweak scalar multiplet provide a simple extension to the Standard Model. Such models may also provide a natural dark matter candidate. It is then of great interest to determine what constraints, if any, are to be placed on these models. In this talk, we examine two different classes of models: those with an accidental U(1) symmetry, and those with an...