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Search for lepton flavour violation in ep collisions at HERA

Aktas, A.; Hansson, Magnus LU ; Jönsson, Leif LU ; Knutsson, Albert LU and Osman, Sakar LU (2007) In European Physical Journal C 52. p.833-847
Abstract
A search for the lepton flavour violating processes ep→μX and ep→τX is performed with the H1 experiment at HERA. Final states with a muon or tau and a hadronic jet are searched for in a data sample corresponding to an integrated luminosity of 66.5 pb-1 for e+p collisions and 13.7 pb-1 for e-p collisions at a centre-of-mass energy of 319 GeV. No evidence for lepton flavour violation is found. Limits are derived on the mass and the couplings of leptoquarks inducing lepton flavour violation in an extension of the Buchmüller–Rückl–Wyler effective model. Leptoquarks produced in ep collisions with a coupling strength of λ=0.3 and decaying with the same coupling strength to a muon–quark pair or a tau–quark pair are excluded at 95% confidence... (More)
A search for the lepton flavour violating processes ep→μX and ep→τX is performed with the H1 experiment at HERA. Final states with a muon or tau and a hadronic jet are searched for in a data sample corresponding to an integrated luminosity of 66.5 pb-1 for e+p collisions and 13.7 pb-1 for e-p collisions at a centre-of-mass energy of 319 GeV. No evidence for lepton flavour violation is found. Limits are derived on the mass and the couplings of leptoquarks inducing lepton flavour violation in an extension of the Buchmüller–Rückl–Wyler effective model. Leptoquarks produced in ep collisions with a coupling strength of λ=0.3 and decaying with the same coupling strength to a muon–quark pair or a tau–quark pair are excluded at 95% confidence level up to masses of 459 GeV and 379 GeV, respectively. (Less)
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author
organization
publishing date
type
Contribution to journal
publication status
published
subject
in
European Physical Journal C
volume
52
pages
833 - 847
publisher
Springer
external identifiers
  • wos:000250842100005
  • scopus:36148988766
ISSN
1434-6044
DOI
10.1140/epjc/s10052-007-0440-2
language
English
LU publication?
yes
id
0aaf63d7-cc6d-426f-a80b-4701bf87a774 (old id 798688)
date added to LUP
2007-12-28 14:50:04
date last changed
2017-01-01 08:15:23
@article{0aaf63d7-cc6d-426f-a80b-4701bf87a774,
  abstract     = {A search for the lepton flavour violating processes ep→μX and ep→τX is performed with the H1 experiment at HERA. Final states with a muon or tau and a hadronic jet are searched for in a data sample corresponding to an integrated luminosity of 66.5 pb-1 for e+p collisions and 13.7 pb-1 for e-p collisions at a centre-of-mass energy of 319 GeV. No evidence for lepton flavour violation is found. Limits are derived on the mass and the couplings of leptoquarks inducing lepton flavour violation in an extension of the Buchmüller–Rückl–Wyler effective model. Leptoquarks produced in ep collisions with a coupling strength of λ=0.3 and decaying with the same coupling strength to a muon–quark pair or a tau–quark pair are excluded at 95% confidence level up to masses of 459 GeV and 379 GeV, respectively.},
  author       = {Aktas, A. and Hansson, Magnus and Jönsson, Leif and Knutsson, Albert and Osman, Sakar},
  issn         = {1434-6044},
  language     = {eng},
  pages        = {833--847},
  publisher    = {Springer},
  series       = {European Physical Journal C},
  title        = {Search for lepton flavour violation in ep collisions at HERA},
  url          = {http://dx.doi.org/10.1140/epjc/s10052-007-0440-2},
  volume       = {52},
  year         = {2007},
}