BSM Group Activities DUNE Collaboration Meeting –ND Physics Jan. 14, 2016 Jae Yu Univ. of Texas at Arlington

Scope of the group No longer just focused on ND physics –Includes phenomena that involves FD as well Covers all beyond the Standard Model Phenomena –Excluding the non-SM topics related to oscillations at the atmospheric Δm 2 scale –Covered topics Sub-GeV DM search Sterile neutrino search Heavy neutrino search Non-Standard Model Neutrino Interactions Others? Jan. 14, 2016BSM Group Activities, J. Yu, U. Texas at Arlington 2

Timeline Studies needed to understand potential enhancement of the detector Must be part of CD-2 in FY19 Complete the initial list of topics and assignments by Jan. 1, 2016 –Send your favorite topics to Jae What simulation tools are needed? –What do we have for what topics? –To what level of simulation? –Identification of existing tools What time scale? Jan. 14, 2016BSM Group Activities, J. Yu, U. Texas at Arlington 3

BSM Subgroup Leads Low Mass Dark Matter: J. Yu Searches for Sterile Neutrinos & Large Extra Dimension: Alex Sousa Heavy Neutrinos: Athans Hatzikoutelis Non-SM Neutrino Interactions: Amir N. Khan Simulation and Software: Animesh Chatterjee Jan. 14, 2016BSM Group Activities, J. Yu, U. Texas at Arlington 4

Responsibilities of the subgroup leads Continued follow up and promotion of the topic –Continued update in the BSM group Close interaction with the relevant experts and theorists for simulation tools and link the simulation tools group Coordinate the work within the subgroup to –investigate specific detector requirement –Generate the discovery potential and/or the sensitivity plots –write the relevant CD2 section in a timely fashion The MC Tools group: –interact with the DUNE simulation group –provide necessary integration of the MC tools – including specific theoretical simulators – –coordinate generation of simulated data necessary for BSM subgroup investigations Jan. 14, 2016BSM Group Activities, J. Yu, U. Texas at Arlington 5

Milestones End of Jan. 2016: Complete the initial list of topics and people to work on –Identify existing MC tools and the needs for missing tools July 1, 2016: Complete initial studies on sensitivities on various topics –Assess necessary detector enhancement July 1, 2017: Complete more systematic discovery potential and sensitivity studies Jan 1, 2018: Take part in CD2 writing Jan. 14, 2016BSM Group Activities, J. Yu, U. Texas at Arlington 6

Physics Possibility Doc Structure Title: Beyond the Standard Model Physics Possibilities at DUNE Document structure –Introduction (JY – with subgroup leaders) –Physics Topics Sections (subgroup leaders) Physics motivation Experimental Signatures + needed detector capabilities Current Status of Measurements Existing MC tools Timeline –MC & Analysis Tools Section (Animesh) –Conclusions –References Jan. 14, 2016BSM Group Activities, J. Yu, U. Texas at Arlington 7

Dark Metter Search Motivation Jan. 14, 2016BSM Group Activities, J. Yu, U. Texas at Arlington 8 DUNE potential LHC potential

Light DM Production at High Intensity Accelerator Now the Higgs particle, a part of only 5% of the universe, may’ve been seen It is time for us to follow the suite of others in the 95% of the universe!! Detection of DM: How does a DM event look in an experiment?: High Intensity Proton Beam Higher E LBNE (F) Lower E MiniBooNE Jan. 14, 2016BSM Group Activities, J. Yu, U. Texas at Arlington 9

The biggest background is neutrinos in the beam –Neutrinos are primarily produced from charged meson decays –DM have no electrical charges and are produced in the primary target We can have a beamline that separates neutrinos and anti- neutrinos from DM’s Add a dipole after the mesons are fully focused with the 2 nd horn Jan. 14, 2016BSM Group Activities, J. Yu, U. Texas at Arlington 10 Doubly Sign-selected Horn System (DSHS) ν target Beam Dump High Precision Detector p, π 0, χ π +(-), charged mesons Decay pipe DUNE detector system p Focusing horns dipole Dark Matter Experiments Precision Neutrino Experiments

Some R&D Issues What is the impact to oscillation physics, especially in the second maxima? –What fraction of neutrino flux in what energy bins will be lost depending on the location of the bend? –What is the impact of such loss to precision oscillation physics? What is the pion momentum distribution in the perpendicular plane to the beam direction? –The momentum gradient will be reflected in the dipole magnetic field distributions to minimize losses What is the level of radiation to this special magnet or the LBNF beamline components over time? What detector performance parameters needed for DM? Jan. 14, 2016BSM Group Activities, J. Yu, U. Texas at Arlington 11

Numu and non numu events No tilt 21 mrad 13.5 mrad 13.5 mrad tilt NM Nominal NM CP Sensitivity σ σ δ CP Tilted Incident Beam Simulation Study Jan. 14, 2016BSM Group Activities, J. Yu, U. Texas at Arlington 12

Conclusions Interests high within the collaboration –Many topics within the BSM group are new Members are bringing in new topics we could explore –Work toward more systematic study progressing Highest priority is to be part of CD-2 and to identify necessary detector capability enhancement in a timely fashion –Initial list of capabilities before the summer 2016 Detailed list of tasks are being put together for members to contribute Need many people to complete all the tasks for CD-2 Jan. 14, 2016BSM Group Activities, J. Yu, U. Texas at Arlington 13