Supersymmetric dark matter after LHC run 1

被引：87
作者：
Bagnaschi, E. A. [1 ]
Buchmueller, O. [2 ]
Cavanaugh, R. [3 ,4 ]
Citron, M. [2 ]
De Roeck, A. [5 ,6 ]
Dolan, M. J. [7 ,8 ]
Ellis, J. R. [5 ,9 ]
Flaecher, H. [10 ]
Heinemeyer, S. [11 ]
Isidori, G. [12 ]
Malik, S. [2 ]
Martinez Santos, D. [13 ]
Olive, K. A. [14 ]
Sakurai, K. [9 ]
de Vries, K. J. [2 ]
Weiglein, G. [1 ]
机构：
[1] DESY, Notkestr 85, D-22607 Hamburg, Germany
[2] Univ London Imperial Coll Sci Technol & Med, Blackett Lab, High Energy Phys Grp, London SW7 2AZ, England
[3] Fermilab Natl Accelerator Lab, Batavia, IL 60510 USA
[4] Univ Illinois, Dept Phys, Chicago, IL 60607 USA
[5] CERN, Dept Phys, CH-1211 Geneva 23, Switzerland
[6] Univ Antwerp, B-2610 Antwerp, Belgium
[7] SLAC Natl Accelerator Lab, Theory Grp, Menlo Pk, CA 94025 USA
[8] Univ Melbourne, Sch Phys, ARC Ctr Excellence Particle Phys Terascale, Parkville, Vic 3010, Australia
[9] Kings Coll London, Dept Phys, Theoret Particle Phys & Cosmol Grp, London WC2R 2LS, England
[10] Univ Bristol, HH Wills Phys Lab, Bristol BS8 1TL, Avon, England
[11] Inst Fis Cantabria CSIC UC, Santander 39005, Spain
[12] Univ Zurich, Inst Phys, CH-8057 Zurich, Switzerland
[13] Univ Santiago de Compostela, Santiago De Compostela 15706, Spain
[14] Univ Minnesota, Sch Phys & Astron, William I Fine Theoret Phys Inst, Minneapolis, MN 55455 USA
来源：
EUROPEAN PHYSICAL JOURNAL C | 2015年 / 75卷 / 10期
基金：
美国国家科学基金会; 欧洲研究理事会; 美国能源部;
关键词：
NEUTRALINO RELIC DENSITY; HIGGS-BOSON SEARCHES; MINIMAL SUPERGRAVITY; STOP COANNIHILATION; BENCHMARK SCENARIOS; PARAMETER SPACE; MSSM; LIGHT; MASS; PROGRAM;
D O I：
10.1140/epjc/s10052-015-3718-9
中图分类号：
O412 [相对论、场论]; O572.2 [粒子物理学];
学科分类号：
摘要：
Different mechanisms operate in various regions of the MSSM parameter space to bring the relic density of the lightest neutralino, (chi) over bar (0)(1), assumed here to be the lightest SUSY particle (LSP) and thus the dark matter (DM) particle, into the range allowed by astrophysics and cosmology. These mechanisms include coannihilation with some nearly degenerate next-to-lightest supersymmetric particle such as the lighter stau t (tau) over bar (1), stop (t) over bar (1) or chargino (chi) over bar (+/-)(1), resonant annihilation via direct-channel heavy Higgs bosons H/A, the light Higgs boson h or the Z boson, and enhanced annihilation via a larger Higgsino component of the LSP in the focus-point region. These mechanisms typically select lower-dimensional subspaces inMSSMscenarios such as the CMSSM, NUHM1, NUHM2, and pMSSM10. We analyze how future LHC and direct DM searches can complement each other in the exploration of the different DM mechanisms within these scenarios. We find that the (tau) over bar (1) coannihilation regions of the CMSSM, NUHM1, NUHM2 can largely be explored at the LHC via searches for is not an element of(T) events and long-lived charged particles, whereas their H/A funnel, focus-point and (chi) over bar (+/-)(1) coannihilation regions can largely be explored by the LZ and Darwin DM direct detection experiments. We find that the dominant DM mechanism in our pMSSM10 analysis is (chi) over bar (+/-)(1) coannihilation: parts of its parameter space can be explored by the LHC, and a larger portion by future direct DM searches.
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页数：16
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