Using 1.45 million hadronic Z decays collected by the ALEPH experiment at LEP, the b --> tau(-) ($) over bar V(tau)X branching ratio is measured to be 2.75 +/- 0.30 +/- 0.37%. In addition an upper limit of 1.8 x 10(-3) at 90% confidence level is placed upon the exclusive branching ratio of B- --> tau(-)($) over bar V-tau. These measurements are consistent with SM expectations, and put the constraint tan beta/M(H+) < 0.52 GeV-1 at 90% confidence level on all Type II two Higgs doublet models (such as the MSSM).

Measurement of the b → τ- ν -τX branching ratio and an upper limit on B- → τ- ν - / Buskulic, D., Casper, D., Debonis, I., Decamp, D., Ghez, P., Goy, C., Lees, J.p., Minard, M.n., Odier, P., Pietrzyk, B., Ariztizabal, F., Chmeissani, M., Crespo, J.m., Efthymiopoulos, I., Fernandez, E., Fernandezbosman, M., Gaitan, V., Garrido, L., Martinez, M., Orteu, S., et al.. - In: PHYSICS LETTERS. SECTION B. - ISSN 0370-2693. - STAMPA. - 343:1-4(1995), pp. 444-452. [10.1016/0370-2693(94)01584-Y]

Measurement of the b → τ- ν -τX branching ratio and an upper limit on B- → τ- ν -

CREANZA, Donato Maria;IASELLI, Giuseppe;MAGGI, Giorgio Pietro;
1995

Abstract

Using 1.45 million hadronic Z decays collected by the ALEPH experiment at LEP, the b --> tau(-) ($) over bar V(tau)X branching ratio is measured to be 2.75 +/- 0.30 +/- 0.37%. In addition an upper limit of 1.8 x 10(-3) at 90% confidence level is placed upon the exclusive branching ratio of B- --> tau(-)($) over bar V-tau. These measurements are consistent with SM expectations, and put the constraint tan beta/M(H+) < 0.52 GeV-1 at 90% confidence level on all Type II two Higgs doublet models (such as the MSSM).
1995
https://www.sciencedirect.com/science/article/pii/037026939401584Y?via%3Dihub
Measurement of the b → τ- ν -τX branching ratio and an upper limit on B- → τ- ν - / Buskulic, D., Casper, D., Debonis, I., Decamp, D., Ghez, P., Goy, C., Lees, J.p., Minard, M.n., Odier, P., Pietrzyk, B., Ariztizabal, F., Chmeissani, M., Crespo, J.m., Efthymiopoulos, I., Fernandez, E., Fernandezbosman, M., Gaitan, V., Garrido, L., Martinez, M., Orteu, S., et al.. - In: PHYSICS LETTERS. SECTION B. - ISSN 0370-2693. - STAMPA. - 343:1-4(1995), pp. 444-452. [10.1016/0370-2693(94)01584-Y]
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11589/4251
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