清华大学：SUSY Higgs at the LHC plus a bit more

清华大学 nghua University One channel that has received some attention is H,A→22→(C(和 4 leptons signature (2 OS same-flavor pairs) But if such a signal is observed, is it really from this decay chain? (assumption in several studies thus far

清华大学 Tsinghua University 0 0 0 0 2 2 1 1 , H A   i i j j                 4 leptons + E signature (assumption in several studies thus far) (2 OS same-flavor pairs) channel that has received some attention is:

tan=5o(PB,4)×BR(B,A→4N)mB m=400Gek 600 400 200 600 400 200 200 400 M1=0.5M2 from M,=500Ge 600 gaugino 8.75 unification 400 200 600 200 400 light M=600Gek sleptons 4.45 400 200 400 u(Gev)

M ( G e V) 2 tan   5  PP  H, A BRH, A  4 N in fb 1 2 M  0.5M from gaugino unification 400 M A  GeV 500 M A  GeV 600 M A  GeV light sleptons

tanB=100(P→H,4→)×BRQ(H,4→4N)m乃 f,=400Ge 600 21.95 22.5 400 200 200 M,=500Gel 600 13.5 12.95 400 600 400 200 200 600 M,=600Ge 600 200 600 400 200 200 400 600 μ(Ge

M ( G e V) 2 tan  10  PP  H, A BR H, A  4N  in fb 400 M A  GeV 500 M A  GeV 600 M A  GeV

tanB=20(PP→H,A→)×BR(H1,4→4N)inb M,=400Ge 38.5 200 600 400 200 200 400 600 M,=500Ge 600 400 2002x08 600 400 200 400 M,=600Ge 200 μ(Gev

2 M ( G e V) tan   20  PP  H , A BR H , A  4N  in fb 400 M A  GeV 500 M A  GeV 600 M A  GeV

600 00 200 200 b00 400 400 ≈ 600 600 400 200 600 400 200 400 600 600 445 400 400 395 200 200 600 400 200 u(Gev) Figure 1: a(pp- H, A)x BR(H, A- 40N)(in fb), where (=et or H* and N represents invisible final state particles, including percentage from H, A=$2x2>90%(red),50% 90%(yellow ), 10%-50%(light blue),< 10%(white), with tan B=5, MA= 400 Gev(top), 500 GeV(middle), 600 Gev(bottom). Optimised slepton masses(with stau inputs raised 100 Gev)are used. Finally, mr 175 GeV, mg =4. 25 GeV, mi=ITeV, m;=800 Gev A= A=0. The cross-hatch shaded areas are excluded by LEP