The data collected at centre-of-mass energies ranging from 130 to 172 GeV by ALEPH at LEP, corresponding to an integrated luminosity of 27.5 pb(-1), are analysed In a search for pair-produced charged Higgs bosons H(+/-). Three analyses are employed to select the tau(+)nu(tau)tau(-)<(nu)over bar (tau)>, <C(S)over bar tau>(-)<(nu)over bar (tau)> and c (s) over bar s (c) over bar final states. No evidence for a signal is found. Mass limits are set as a function of the branching fraction B(tau nu) for H(+/-)-->tau nu. Charged Higgs bosons with masses below 52 GeV/c(2) are excluded at 95% C.L. independently of B(tau nu) thus significantly improving on existing limits. (C) 1998 Published by Elsevier Science B.V.
Search for charged Higgs bosons in e(+)e(-) collisions at centre-of-mass energies from 130 to 172 GeV RID C-6238-2011 RID F-5127-2011 RID G-1279-2010 RID H-5578-2011
ROLANDI, LUIGI;LIGABUE, FRANCO;LUSIANI, Alberto;
1998
Abstract
The data collected at centre-of-mass energies ranging from 130 to 172 GeV by ALEPH at LEP, corresponding to an integrated luminosity of 27.5 pb(-1), are analysed In a search for pair-produced charged Higgs bosons H(+/-). Three analyses are employed to select the tau(+)nu(tau)tau(-)<(nu)over bar (tau)>,I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
