Dark Forces: Searches for New Forces at the GeV-scale

24 Sept 2009, 08:00 → 26 Sept 2009, 18:00 US/Pacific

Bldg. 48 ROB A/B/C/D (SLAC National Accelerator Laboratory)

Aaron Roodman (SLAC), Jay Wacker (SLAC), Mathew Graham (SLAC), Michael Peskin (SLAC), Natalia Toro (Stanford University), Philip Schuster (SLAC), Rouven Essig (SLAC)

Theoretical models related to dark matter have proposed that there are long-range forces mediated by new gauge bosons with masses in the MeV to GeV range and very weak coupling to ordinary matter. The experimental constraints on the existence of these new gauge bosons are quite weak. This workshop will bring together theorists and experimentalists to stimulate progress in searching for these "dark forces" in three arenas: 1. new fixed-target experiments at electron and proton accelerators such as JLab, SLAC, and Fermilab; 2. searches at high-luminosity e+e- experiments, including BaBar, BELLE, CLEO-c, KLOE, and BES-III; 3. searches at the Tevatron experiments.

Working Group discussion topics WorkingGroupTopics.rtf

Working group discussion topics (PDF) WorkingGroupTopics.pdf

Thursday 24 September

08:00 → 08:45 Registration

08:45 → 09:00 Welcome and Overview

Speaker: Dr Rouven Essig (on behalf of organizers)

Slides DarkForcesOverview.pdf

09:00 → 09:30 Motivations for a dark force from astrophysics and WIMP searches

Speaker: Prof. Neal Weiner (New York University)

Slides (22MB) Weiner_SLACDarkForces.pdf.pdf

09:35 → 10:05 Theories of Dark Forces

Speaker: Prof. Nima Arkani-Hamed (Institute for Advanced Study)

Slides Theories_for_Dark_Forces.pdf

10:10 → 10:35 Coffee Break

10:35 → 11:00 Searching for the Light Dark Gauge Boson in GeV-Scale Experiments.

Speaker: Prof. LianTao Wang (Princeton University)

Slides dark-sector-slac.pdf

11:05 → 11:30 Dark Sectors at High Energy Colliders

Speaker: Prof. Scott Thomas (Rutgers University)

Slides Dark_Photons_High_Energy_Colliders.pdf

11:35 → 12:00 Dark Photon Searches at D0

Speaker: Prof. Yuri Gershtein (Rutgers University)

Slides SLAC-09.pdf

12:05 → 13:00 Lunch

13:05 → 13:20 Introduction to Electron Fixed-Target Experiments

Speaker: Dr Natalia Toro (Stanford University)

Slides ToroFixedTarget.pdf

13:20 → 13:45 New Fixed-Target Experiment for a Heavy Photon Search

Speaker: Dr Takashi Maruyama (SLAC)

Slides DarkForce_Maruyama.pdf DarkForce_Maruyama.ppt

13:50 → 14:05 Introduction to Working Groups

Speaker: Dr Philip Schuster (on behalf of organizers)

Slides WorkingGroupIntro.pdf

14:05 → 15:30 Working Group: Fixed Target Experiments

14:05 Jefferson Lab:Overview, Prospects, and First Attempts at Data Mining for A’ search

Speaker: Peter Bosted

Slides Bosted_JeffersonLab_DarkForces.pdf

14:25 Facilities and Prospects at Mainz: MAMI and MESA

Speaker: Dr Kurt Aulenbacher (Institut für Kernphysik der Universität Mainz)

Slides compact_GeV_accelerators.pdf compact_GeV_accelerators.ppt

14:45 Fixed Target Experiments at XFEL

Speaker: Javier Redondo (DESY)

Slides Redondo_DarkForces_DESY_XFEL.pdf

14:05 → 15:30 Working Group: High-Energy Colliders

14:05 Defining and Simulating Lepton Jets

Speaker: Mr Joshua Ruderman (Princeton University)

Slides DFRuderman.pdf

14:05 → 15:30 Working Group: e+e- Colliders

15:30 → 15:50 Coffee Break

15:50 → 16:15 Searches for the X(214) in ISR and B Decay

Speaker: Prof. Youngjoon Kwon (Yonsei University)

Slides kwon_X214_Belle.pdf

16:20 → 16:45 Search Strategies for Multilepton Jets at the Tevatron

Speaker: Prof. Chris Hays (Oxford University)

Slides ChrisHays.pdf

16:50 → 17:05 Break

17:05 → 17:25 Probing a Secluded U(1) at B-factories

Speaker: Dr Brian Batell (Perimeter Institute)

Slides batell.pdf

17:30 → 17:55 Searches for Exotics in Upsilon Decays at BaBar

Speaker: Dr Hojeong Kim (SLAC)

Slides hojeong.pdf.pdf

19:00 → 21:00 dinner

Friday 25 September

09:00 → 09:25 Hidden portals through fixed targets

Speaker: Prof. Maxim Pospelov (Perimeter Institute, University of Victoria)

Slides DarkForcesPospelov2009.pdf

09:30 → 09:55 Searching for a U-boson with a positron beam and JLab prospects

Speaker: Dr Bogdan Wojtsekhowski (Thomas Jefferson National Accelerator Facility)

Slides U-A.pdf U-A.pptx

10:00 → 10:20 Lepton Jets

Speaker: Dr Itay Yavin (New York University)

Slides Yavin_DarkForcesWorkshop.pdf

10:25 → 10:40 Coffee Break

10:40 → 12:30 Working Group: Fixed Target Experiments

10:40 → 12:30 Working Group: High-Energy Colliders

10:40 → 12:30 Working Group: e+e- Colliders

12:30 → 13:30 Lunch

13:30 → 13:47 Confined Dark Sectors

Speaker: Prof. Jay Wacker (SLAC)

Slides Wacker_DarkForces.pdf

13:50 → 14:15 Search for a Narrow Resonance in e+e- to Four Leptons at Babar

Speaker: Dr Mathew Graham (SLAC)

Slides mgraham-darkForces.pdf

14:20 → 14:45 U Boson Search at the JLab Free Electron Laser

Speaker: Jesse Thaler and Peter Fisher (Berkeley, MIT)

Slides SLAC_25Sep2009_Fisher.pdf

14:50 → 15:10 Coffee Break

15:10 → 15:35 Light hidden U(1)s in LARGE volume string compactifications

Speaker: Prof. Andreas Ringwald (DESY)

Slides Ringwald_Slac.pdf

15:40 → 16:05 Searches for Axion-like Particles and Paraphotons with JLAB FEL

Speaker: Dr Andrei Afanasev (Hampton U/Jefferson Lab)

Slides afanasevDF09.pdf

16:10 → 16:35 Supersymmetric Hidden Sectors at a GeV

Speaker: Dr David Poland (Harvard University)

Slides DarkForces-dpoland.pdf

16:40 → 16:50 break

16:50 → 17:15 Probing a Secluded U(1) at BES

Speaker: Prof. Hai-Bo Li (Institute of High Energy Physics)

Slides Uboson_bes.pdf

17:20 → 18:00 WG SUMMARY AND DISCUSSION: Tevatron

17:20 Summary Talk

Speaker: Dr Andy Haas (SLAC)

Slides DF_highE_workinggroup_2009.pdf

Saturday 26 September

09:00 → 09:25 Chameleonic Forces

Speaker: Prof. Ann Nelson (University of Washington)

Slides nelsonchameleon.pdf

09:30 → 09:55 ADMX: Searching for Dark Matter Axions and other Light Hidden Particles

Speaker: Dr Gray Rybka (University of Washington)

Slides rybka_darkforces_2009_admx.pdf

10:00 → 10:15 Coffee Break

10:15 → 10:40 Searches on the hidden sector with KLOE at DAFNE

Speaker: Prof. Fabio Bossi (INFN Frascati)

Slides Bossi_kloe__slac.pdf

10:45 → 11:10 Dark matter research at the MESA facility

Speaker: Dr Kurt Aulenbacher (Institut für Kernphysik der Universität Mainz)

Slides Darkforces_Aulenbacher_260609V2.pdf Darkforces_Aulenbacher_260609V2.ppt

11:15 → 12:30 Working Group: Fixed Target Experiments

11:15 → 12:30 Working Group: e+e- Colliders

12:30 → 13:20 Lunch

13:20 → 13:45 Prospects for dark sector particle search with Upsilon(nS) data

Speaker: Mr Jamal Rorie (University of Hawaii at Manoa)

Slides Dark_Forces_Draft_2_2.pdf Dark_Forces_Draft_2_2.ppt

13:50 → 14:15 Status and Prospects of the BES III experiment

Speaker: Prof. Yangheng Zheng (GUCAS)

Slides BESIII-SLAC-zheng.pdf

14:20 → 14:35 Coffee Break

14:40 → 15:05 What can the Fermi Gamma-ray Space Telescope tell us about dark forces?

Speaker: Prof. Douglas Finkbeiner (Harvard University)

Slides slac09.pdf

15:10 → 17:00 WG SUMMARY AND DISCUSSION: e+e- colliders and fixed-target experiments

15:15 Fixed-Target WG Summary

Speakers: Prof. James Bjorken (SLAC (Emeritus)), John Jaros

Slides Dark_Forces_Fixed_Target_Summary_2.pdf

15:30 e+e- Collider WG Summary

Speaker: Prof. Adam Ritz (University of Victoria)

Slides slac_e+e-_summary.pdf