Search for charged Higgs bosons at LEP in general two Higgs doublet models

A search for pair-produced charged Higgs bosons was performed in the data collected by the DELPHI detector at LEP II at centre-of-mass energies from 189 GeV to 209 GeV. Five different final states, tau+ nu_tau tau- anti-nu_tau, c sbar cbar s, c sbar tau- anti-nu_tau, W* A W* A and W* A tau- anti-nu_tau were considered, accounting for the major expected decays in type I and type II Two Higgs Doublet Models. No significant excess of data compared to the expected Standard Model processes was observed. The existence of a charged Higgs boson with mass lower than 76.7 GeV/c^2 (type I) or 74.4 GeV/c^2 (type II) is excluded at the 95% confidence level, for a wide range of the model parameters. Model independent cross-section limits have also been calculated.

Note:

42 pages, 19 figures, Accepted by Eur. Phys. J. C Report-no: CERN-EP/2003-064 Journal-ref: Eur. Phys. J. C34 (2004) 399-418

electron positron: colliding beams
electron positron: annihilation
Higgs particle: search for
Higgs particle: charged particle
Higgs particle: multiplet
doublet: 2
Higgs particle: pair production
Higgs particle: decay modes
Higgs particle: mass
lower limit

References(38)

Figures(0)

Search for charged Higgs bosons in e+ e- collisions at s**(1/2) = 189-GeV - 202-GeV

DELPHI

Collaboration

•

J. Abdallah
(
- Paris U., VI-VII
)

et al.

- Phys.Lett.B 525 (2002) 17-28
•
e-Print:
- hep-ex/0201023
•
DOI:
- 10.1016/S0370-2693(01)01282-5

Search for charged Higgs bosons at LEP-2

DELPHI

Collaboration

•

P. Abreu

et al.

- Phys.Lett.B 460 (1999) 484-497
•
DOI:
- 10.1016/S0370-2693(99)00771-6

Search for charged Higgs bosons in e+ e- collisions at energies up to S**(1/2) = 189-GeV

ALEPH

Collaboration

•

R. Barate
(
- Annecy, LAPP
)

et al.

- Phys.Lett.B 487 (2000) 253-263
•
e-Print:
- hep-ex/0008005
•
DOI:
- 10.1016/S0370-2693(00)00822-4

Search for charged Higgs bosons at LEP

L3

Collaboration

•

P. Achard

et al.

- Phys.Lett.B 575 (2003) 208-220
•
e-Print:
- hep-ex/0309056
•
DOI:
- 10.1016/j.physletb.2003.09.057

Search for Higgs bosons in $e^{+} e^{-}$ collisions at 183-GeV

OPAL

Collaboration

•

G. Abbiendi

et al.

- Eur.Phys.J.C 7 (1999) 407-435
•
e-Print:
- hep-ex/9811025
•
DOI:
- 10.1007/s100529901102

The Fermion Mass Scale and Possible Effects of Higgs Bosons on Experimental Observables

- Nucl.Phys.B 161 (1979) 493-532
•
DOI:
- 10.1016/0550-3213(79)90225-6

Natural Conservation Laws for Neutral Currents

Sheldon L. Glashow
(
- Harvard U.
)
,
Steven Weinberg
(
- Harvard U.
)

- Phys.Rev.D 15 (1977) 1958
•
DOI:
- 10.1103/PhysRevD.15.1958

Diagonal Neutral Currents

E.A. Paschos
(
- Brookhaven
)

- Phys.Rev.D 15 (1977) 1966
•
DOI:
- 10.1103/PhysRevD.15.1966

Three body decays of Higgs bosons at LEP-2 and application to a hidden fermiophobic Higgs

A.G. Akeroyd
(
- Valencia U.
)

- Nucl.Phys.B 544 (1999) 557-575
•
e-Print:
- hep-ph/9806337
•
DOI:
- 10.1016/S0550-3213(98)00845-1

Radiative corrections to the decay $H^{+} \to W^{+}$ A0

A.G. Akeroyd
(
- KEK, Tsukuba
)
,
A. Arhrib
(
- Abdelmalek Essaadi U. and
- Rabat U.
)
,
E. Naimi
(
- Abdelmalek Essaadi U. and
- Rabat U.
)

- Eur.Phys.J.C 20 (2001) 51-62
•
e-Print:
- hep-ph/0002288
•
DOI:
- 10.1007/s100520100653

Search for pair produced heavy scalars in Z0 decays

DELPHI

Collaboration

•

P. Abreu

et al.

- Z.Phys.C 64 (1994) 183-194
•
DOI:
- 10.1007/BF01557390

A Combination of preliminary electroweak measurements and constraints on the standard model

ALEPH and
DELPHI and
L3 and
OPAL

Collaborations

e-Print:
- hep-ex/0212036

The DELPHI detector at LEP

DELPHI

Collaboration

•

P.A. Aarnio

et al.

- Nucl.Instrum.Meth.A 303 (1991) 233-276
•
DOI:
- 10.1016/0168-9002(91)90793-P

Performance of the DELPHI detector

DELPHI

Collaboration

•

P. Abreu

et al.

- Nucl.Instrum.Meth.A 378 (1996) 57-100
•
DOI:
- 10.1016/0168-9002(96)00463-9

The Precision Monte Carlo event generator K K for two fermion final states in e+ e- collisions

S. Jadach
(
- DESY and
- Cracow, INP and
- CERN
)
,
B.F.L. Ward
(
- Tennessee U. and
- CERN and
- SLAC
)
,
Z. Was
(
- Cracow, INP and
- CERN
)

- Comput.Phys.Commun. 130 (2000) 260-325
•
e-Print:
- hep-ph/9912214
•
DOI:
- 10.1016/S0010-4655(00)00048-5

The Monte Carlo program KORALZ, version 4.0, for the lepton or quark pair production at LEP / SLC energies

S. Jadach
(
- CERN and
- Cracow, INP
)
,
B.F.L. Ward
(
- Tennessee U. and
- SLAC
)
,
Z. Was
(
- CERN and
- Cracow, INP
)

- Comput.Phys.Commun. 79 (1994) 503-522
•
DOI:
- 10.1016/0010-4655(94)90190-2

BHWIDE 1.00: O(alpha) YFS exponentiated Monte Carlo for Bhabha scattering at wide angles for LEP-1 / SLC and LEP-2

S. Jadach
(
- Cracow, INP and
- CERN
)
,
W. Placzek
(
- Tennessee U.
)
,
B.F.L. Ward
(
- Tennessee U. and
- SLAC and
- CERN
)

- Phys.Lett.B 390 (1997) 298-308
•
e-Print:
- hep-ph/9608412
•
DOI:
- 10.1016/S0370-2693(96)01382-2

WPHACT 1.0: A Program for W W, Higgs and four fermion physics at e+ e- colliders

Elena Accomando
(
- INFN, Turin and
- Turin U.
)
,
Alessandro Ballestrero
(
- INFN, Turin and
- Turin U.
)

- Comput.Phys.Commun. 99 (1997) 270-296
•
e-Print:
- hep-ph/9607317
•
DOI:
- 10.1016/S0010-4655(96)00124-5

WPHACT 2.0: A Fully massive Monte Carlo generator for four fermion physics at e+ e- colliders

Elena Accomando
(
- PSI, Villigen
)
,
Alessandro Ballestrero
(
- CERN and
- INFN, Turin
)
,
Ezio Maina
(
- Turin U. and
- INFN, Turin
)

- Comput.Phys.Commun. 150 (2003) 166-196
•
e-Print:
- hep-ph/0204052
•
DOI:
- 10.1016/S0010-4655(02)00685-9

Monte Carlo Simulation of Two Photon Processes. 1. Radiative Corrections to Multiperipheral e+ e- mu+ mu- Production

- Comput.Phys.Commun. 40 (1986) 271-284,
- Comput. Phys. Commun. 40 ( 1986) 271-284
•
DOI:
- 10.1016/0010-4655(86)90114-1

High-energy physics event generation with PYTHIA 5.7 and JETSET 7.4

Torbjorn Sjostrand
(
- CERN
)

- Comput.Phys.Commun. 82 (1994) 74-90,
- CERN Geneva - TH. 7111 (93/12,rec.Jan.94) 17 p. and e: CERN th-7111-93
•
DOI:
- 10.1016/0010-4655(94)90132-5

HERWIG: A Monte Carlo event generator for simulating hadron emission reactions with interfering gluons. Version 5.1 - April 1991

G. Marchesini
(
- Parma U. and
- INFN, Parma
)
,
B.R. Webber
(
- Cambridge U.
)
,
G. Abbiendi
(
- Padua U. and
- INFN, Padua
)
,
I.G. Knowles
(
- Glasgow U.
)
,
M.H. Seymour
(
- Cambridge U.
)

et al.

- Comput.Phys.Commun. 67 (1992) 465-508,
- Comput. Phys. Commun. 67 (1992) 465-508 and Hamburg DESY - DESY 91-048 (91/05,rec.Jul.) 49 p
•
DOI:
- 10.1016/0010-4655(92)90055-4

ARIADNE version 4: A Program for simulation of QCD cascades implementing the color dipole model

Leif Lonnblad
(
- DESY
)

- Comput.Phys.Commun. 71 (1992) 15-31,
- Comput. Phys. Commun. 71 (1992) 15-31 and Hamburg DESY - DESY 92-046 (92/02,rec.Apr.) 15 p
•
DOI:
- 10.1016/0010-4655(92)90068-A

W pair production cross-section and W branching fractions in e+ e- interactions at 189-GeV

DELPHI

Collaboration

•

P. Abreu

et al.

- Phys.Lett.B 479 (2000) 89-100
•
e-Print:
- hep-ex/0103013
•
DOI:
- 10.1016/S0370-2693(00)00314-2

The Optimal method for the measurement of tau polarization

- Phys.Lett.B 306 (1993) 411-417
•
DOI:
- 10.1016/0370-2693(93)90101-M

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