SUSY Higgs at the LHC plus a bit more Mike Bisset/毕楷杰 PHYSICS 2005 Tsinghua University Beijing,China “Linear Collider' conference 清大学 Tsinghua, July17,2005
“Linear Collider” conference Tsinghua, July 17, 2005 Mike Bisset / 毕楷杰 Tsinghua University Beijing, China plus a bit more
First consider something that is NOT supersymmetry MUED'S Minimal universal extra dimensions H.-C. Cheng, Matchev& Schmaltz hep-ph/0205314 All SM fields propagate in a single compactified extra dimension with compactification radius near the Tev scale E All SM particles have KK partners with similar couplings (lowest energy states in the Kaluza-Klein towers) E The lowest KK level particles carry a conserved quantum number KK-parity The lightest kK particle is the stable LKP The LKP is not detected, resulting in a missing energy signal Sounds a lot like the MSSM. no?
MUED’s Minimal universal extra dimensions All SM fields propagate in a single compactified extra dimension with compactification radius near the TeV scale All SM particles have KK partners with similar couplings The lowest KK level particles carry a conserved quantum number KK-parity The lightest KK particle is the stable LKP The LKP is not detected, resulting in a missing energy signal. (lowest energy states in the Kaluza-Klein towers) Sounds a lot like the MSSM, no? First consider something that is supersymmetry --- H.-C. Cheng, Matchev & Schmaltz hep-ph/0205314
Distinctions between the mssm and MUED's O Sparticles have different spins from their SM partners while KK particles have the same spin This would certainly be testable at a LC, but at the epph0405052 ② There is no analog to the heavier MSSM Higgs bosons The KK partners to the Higgs carry KK-parity, and so should be pair produced (behaving more like Higgsinos than like Higgs bosons)
Distinctions between the MSSM and MUED’s Sparticles have different spins from their SM partners while KK particles have the same spin This would certainly be testable at a LC, but at the LHC maybe not There is no analog to the heavier MSSM Higgs bosons The KK partners to the Higgs carry KK-parity, and so should be pair produced (behaving more like Higgsinos than like Higgs bosons) Smillie & Webber hep-ph/0507171 limited attempts: Barr, hep-ph/0405052
So we see detection of the heavier MSSM Higgs bosons IS crucial Tor even being sure that we are seeing SUPERSYMMETRY
So we see detection of the heavier MSSM Higgs bosons is crucial for even being sure that we are seeing SUPERSYMMETRY
How well can we do at the lHc?
How well can we do at the LHC?