ATLAS DISCOVERY POTENTIAL FOR A HEAVY CHARGED HIGGS BOSON.

ASSAMAGAN,K.A. ; COADOU,Y. ; DEANDREA,A.

Brookhaven National Laboratory

关键词: Dimensions;    Quarks;    Sensitivity;    Neutrinos;    72 Physics Of Elementary Particles And Fields;   

DOI  :  10.2172/791976
RP-ID  :  BNL--68986
RP-ID  :  AC02-98CH10886
RP-ID  :  791976

美国|英语

来源: UNT Digital Library

【 摘 要 】

The sensitivity of the ATLAS detector to the discovery of a heavy charged Higgs boson is presented. Assuming a heavy SUSY spectrum, the most promising channels above the top quark mass are H{sup {+-}} {yields} tb and h{sup {+-}} {yields} {tau}{sup {+-}}{nu}{sub {tau}} which provide coverage in the low and high tan {beta} regions up to {approx} 600 GeV. The achievable precisions on the charged Higgs mass and tan {beta} determination are also discussed. The H{sup {+-}} {yields} W{sup {+-}}h{sup 0} channel, though restricted to a small MSSM parameter space, shows a viable signal in NMSSM where the parameter space is less constrained. The observation of the channel H{sup -} {yields} {tau}{sub L}{sup -} {nu}{sub {tau}} + c.c. may constitute a distinctive evidence for models with singlet neutrinos in large extra dimensions.