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.

Search for charged Higgs bosons in e+e− collisions at centre-of-mass energies from 130 to 172 GeV / Barate, R., Buskulic, D., Decamp, D., Ghez, P., Goy, C., Lees, J.p., Lucotte, A., Minard, M.n., Nief, J.y., Pietrzyk, B., Casado, M.p., Chmeissani, M., Comas, P., Crespo, J.m., Delfino, M., Fernandez, E., Fernandez Bosman, M., Garrido, L., Juste, A., Martinez, M., et al.. - In: PHYSICS LETTERS. SECTION B. - ISSN 0370-2693. - STAMPA. - 418:3-4(1998), pp. 419-429. [10.1016/S0370-2693(97)01490-1]

Search for charged Higgs bosons in e+e− collisions at centre-of-mass energies from 130 to 172 GeV

CREANZA, Donato Maria;IASELLI, Giuseppe;MAGGI, Giorgio Pietro;
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)>, (-)<(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.
1998
Search for charged Higgs bosons in e+e− collisions at centre-of-mass energies from 130 to 172 GeV / Barate, R., Buskulic, D., Decamp, D., Ghez, P., Goy, C., Lees, J.p., Lucotte, A., Minard, M.n., Nief, J.y., Pietrzyk, B., Casado, M.p., Chmeissani, M., Comas, P., Crespo, J.m., Delfino, M., Fernandez, E., Fernandez Bosman, M., Garrido, L., Juste, A., Martinez, M., et al.. - In: PHYSICS LETTERS. SECTION B. - ISSN 0370-2693. - STAMPA. - 418:3-4(1998), pp. 419-429. [10.1016/S0370-2693(97)01490-1]
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11589/794
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