Mass limit for the standard model Higgs boson with the full LEP I ALEPH data sample

Buskulic, D.; De Bonis, I.; Decamp, D.; Ghez, Philippe; Goy, C.; Lees, J.-P.; Lucotte, A.; Minard, M.-N.; Nief, J.-Y.; Odier, P.

doi:10.1016/0370-2693(96)00800-3

Mass limit for the standard model Higgs boson with the full LEP I ALEPH data sample

ALEPH

Collaboration

Jun, 1996

12 pages

Published in:

Phys.Lett.B 384 (1996) 427-438,
Phys.Lett.B 384 (1996) 427-438

Published: Feb 12, 1999

DOI:

10.1016/0370-2693(96)00800-3 (publication)

Report number:

CERN-PPE-96-079,
CERN-PPE-96-79

Experiments:

CERN-LEP-ALEPH

View in:

reference search76 citations

Citations per year

Abstract: (Elsevier B.V.)

The reaction e⁺e⁻ → HZ^∗ is used to search for the standard model Higgs boson in the

H ν ν

and the Hℓ⁺ℓ⁻ channels. The data sample corresponds to about 4.5 million hadronic Z decays collected by the ALEPH experiment at LEP from 1989 to 1995 at centre-of-mass energies at and around the Z peak. Three candidate events are found in the Hμ⁺μ⁻ channel, in agreement with the expected background from the electroweak process e⁺e⁻

ℓ

⁺ℓ⁻qq. This search results in a 95% C.L. lower limit on the Higgs boson mass of 63.9 GeV/c².

electron positron: colliding beams
electron positron: annihilation
Higgs particle: search for
Higgs particle: electroproduction
Z0: associated production
Z0: leptonic decay
Higgs particle: mass
lower limit
event shape analysis: planarity
background

References(19)

Figures(0)

[1]

For recent reviews, see:

J.F. Gunion
,
H.E. Haber
,
G. Kane
,
S. Dawson

[1]

G.AltarelliR.KleissC.Verzegnassi

P.J. Franzini

- CERN 89-08 (1989)

[2]

Search for the Standard Model Higgs boson

ALEPH

Collaboration

•

D. Buskulic
(
- Annecy, LAPP
)

et al.

- Phys.Lett.B 313 (1993) 299-311
•
DOI:
- 10.1016/0370-2693(93)91227-E

[3]

P. Abreu

- Nucl.Phys.B 421 (1994) 2

[3]

A Search for the neutral Higgs boson at LEP

L3

Collaboration

•

O. Adriani
(
- Florence U. and
- INFN, Florence
)

et al.

- Phys.Lett.B 303 (1993) 391-399,
- Phys. Lett. B303 (1993) 391-399 and CERN Geneva - CERN-PPE-93-030 (93/02,rec.May) 16 p
•
DOI:
- 10.1016/0370-2693(93)91450-2

[3]

Search for the minimal Standard Model Higgs boson

OPAL

Collaboration

•

R. Akers

et al.

- Phys.Lett.B 327 (1994) 397-410
•
DOI:
- 10.1016/0370-2693(94)90746-3

[4]

J.-F. Grivaz
,
F. Le Diberder

- LAL preprint # 92-37 (1992)

[5]

Glasgow, Scotland

D. Buskulic

[6]

Brussels, Belgium

D. Buskulic

[7]

ALEPH: A detector for electron-positron annnihilations at LEP

ALEPH

Collaboration

•

D. Decamp
(
- Annecy, LAPP
)

et al.

- Nucl.Instrum.Meth.A 294 (1990) 121-178,
- Nucl.Instrum.Meth.A 303 (1991) 393 (erratum)
•
DOI:
- 10.1016/0168-9002(90)91831-U

[8]

Performance of the ALEPH detector at LEP

ALEPH

Collaboration

•

D. Buskulic
(
- Annecy, LAPP
)

et al.

- Nucl.Instrum.Meth.A 360 (1995) 481-506
•
DOI:
- 10.1016/0168-9002(95)00138-7

[9]

A Precise measurement of Gamma ( $Z \to b \bar{b}$ ) / Gamma ( $Z \to$ hadrons)

ALEPH

Collaboration

•

D. Buskulic
(
- Annecy, LAPP
)

et al.

- Phys.Lett.B 313 (1993) 535-548,
- Phys. Lett. B313 (1993) 535-548 and CERN Geneva - CERN-PPE-93-108 (93/06,rec.Sep.) 16 p
•
DOI:
- 10.1016/0370-2693(93)90028-G

[10]

Searches for new particles in $Z$ decays using the ALEPH detector

ALEPH

Collaboration

•

D. Decamp
(
- Annecy, LAPP
)

et al.

- Phys.Rept. 216 (1992) 253-340
•
DOI:
- 10.1016/0370-1573(92)90177-2

[11]

Study of the four fermion final state at the Z resonance

ALEPH

Collaboration

•

D. Buskulic
(
- Annecy, LAPP
)

et al.

- Z.Phys.C 66 (1995) 3-18
•
DOI:
- 10.1007/BF01496576

[12]

An Electroweak Monte Carlo for four fermion production

- Comput.Phys.Commun. 75 (1993) 191-218,
- Comput. Phys. Commun. 75 (1993) 191-218, and CERN Geneva - CERN-PPE-92-115 (92/07,rec.Sep.) 40 p
•
DOI:
- 10.1016/0010-4655(93)90175-C

[13]

G.AltarelliT.SjöstrandF.Zwirner

P. Janot

- CERN 96-01 Vol. 2 (1996) 309

[14]

Update of electroweak parameters from $Z$ decays

ALEPH

Collaboration

•

D. Buskulic
(
- Annecy, LAPP
)

et al.

- Z.Phys.C 60 (1993) 71-82
•
DOI:
- 10.1007/BF01650432

[15]

to appear in the Proceedings

R. Hall
,
F. Tartarelli

[16]

On the determination of a mass lower limit for the Higgs boson in the presence of candidate events

J.F. Grivaz
(
- Orsay, LAL
)
,
F. Le Diberder
(
- Orsay, LAL
)

- Nucl.Instrum.Meth.A 333 (1993) 320-323
•
DOI:
- 10.1016/0168-9002(93)91173-K