Limits on t-quark decay into charged Higgs from a direct search at the CERN pp collider

C. Albajar, M. G. Albrow, O. C. Allkofer, K. Ankoviak, R. Apsimon, B. Aubert, C. Bacci, S. Bartha, G. Bauer, A. Bettini, A. Bezaguet, P. Biddulph, H. Bohn, A. Böhrer, R. Bonino, K. Bos, M. Botlo, D. Brockhausen, C. Buchanan, B. BuschbeckG. Busetto, A. Caner, P. Casoli, H. Castilla-Valdez, F. Cavanna, P. Cennini, S. Centro, F. Ceradini, G. Ciapetti, S. Cittolin, E. Clayton, D. Cline, J. Colas, R. Conte, J. A. Coughlan, D. Dau, C. Daum, M. Della Negra, M. Demoulin, D. Denegri, H. Dibon, A. DiCiaccio, F. J. Diez Hedo, L. Dobrzynski, J. Dorenbosch, J. D. Dowell, D. Drijard, K. Eggert, E. Eisenhandler, N. Ellis

Research output: Contribution to journalArticlepeer-review

16 Scopus citations


A search for t-quark decay into charged Higgs, t→H+b, with the charged Higgs decaying via the H+→τ+vτ mode, has been done in proton-antiproton collisions at √2 = 0.63 TeV with the UA1 experiment. No evidence for this decay das been observed. Mass limits at 95% and 90% CL for the t-quark and the charged Higgs are presented. The results have also been interpreted in terms of the tan β parameter of a two-doublet Higgs sector.

Original languageEnglish (US)
Pages (from-to)459-468
Number of pages10
JournalPhysics Letters B
Issue number3-4
StatePublished - Mar 28 1991

Bibliographical note

Funding Information:
We are grateful to the management and staff of CERN and of all participating Institutions for the vigorous support of this experiment. The following funding agencies have contributed to this programme: Fonds zur F6rderung der Wissenschaftlichen For-schung, Austria; Valtion luonnontieteellinen toimikunta, Suomen Akatemia, Finland; Institut National de Physique Nucl6aire et de Physique des Particules, and Institut de Recherche Fon-damentale (CEA), France; Bundesministerium fiir Forschung und Technolo-gie, FRG; Istituto Nazionale di Fisica Nucleare, Italy; Science and Engineering Research Council, UK; Stichting voor Fundamenteel Onderzoek der Ma-lerie, The Netherlands; Centro de Investigaciones Energetica, Medioam-bientales y Tecnologicas (CIEMAT), Spain; Department of Energy, USA. Thanks are due to the following people who have worked with the Collaboration in the preparation for and data collection on the runs described here: L. Baumard, F. Bernasconi, D. Brozzi, V. Cecconi, L. Dumps, G. Fetchenhauer, G. Gallay, M. Kellner, J.C. Michelon, S. Pavlon and L. Pollet.


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