Advanced

Observation potential of the decays B0s,d → J/ψη

Driouichi, Chafik LU ; Eerola, Paula LU ; Melcher, Martin; Ohlsson-Malek, Fairouz and Viret, Sebastian (2002) In EPJ direct 4(CN2). p.1-13
Abstract
The observation potential of the decays B0s,d → J/ψη with the ATLAS detector at the LHC is described in this paper. At present there exist only upper limits for the branching fractions, but at LHC, a clear signal for the decay mode B0s,d → J/ψη is expected. The branching fraction of this decay mode can thus be measured, and other parameters such as B0s lifetime can be measured as well.

The decay mode B0s → J/ψη is analogous to the mode B0s → J/ψφ, which has been studied extensively in view of CP violation measurements. In these two decay modes, the CP asymmetry predicted by the Standard Model is very small, and the observation of a sizeable effect would be a signal of physics beyond the Standard Model. The decay mode J/ψη... (More)
The observation potential of the decays B0s,d → J/ψη with the ATLAS detector at the LHC is described in this paper. At present there exist only upper limits for the branching fractions, but at LHC, a clear signal for the decay mode B0s,d → J/ψη is expected. The branching fraction of this decay mode can thus be measured, and other parameters such as B0s lifetime can be measured as well.

The decay mode B0s → J/ψη is analogous to the mode B0s → J/ψφ, which has been studied extensively in view of CP violation measurements. In these two decay modes, the CP asymmetry predicted by the Standard Model is very small, and the observation of a sizeable effect would be a signal of physics beyond the Standard Model. The decay mode J/ψη constitutes thus a cross-check for the mode J/ψφ. Furthermore, the former final state is a CP-eigenstate and no angular analysis is thus needed.

The reconstruction of η-mesons at LHC experiments has not been addressed before, and therefore the study presented here can also be regarded as an example of the physics prospects with η-mesons at the LHC. (Less)
Please use this url to cite or link to this publication:
author
organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
ATLAS B-physics LHC
in
EPJ direct
volume
4
issue
CN2
pages
1 - 13
publisher
Springer
ISSN
1435-3725
project
ATLAS
language
English
LU publication?
yes
id
f99af314-f81b-474f-b8f0-628b9b112266 (old id 958663)
date added to LUP
2008-01-25 16:41:57
date last changed
2016-04-16 05:29:57
@article{f99af314-f81b-474f-b8f0-628b9b112266,
  abstract     = {The observation potential of the decays B0s,d → J/ψη with the ATLAS detector at the LHC is described in this paper. At present there exist only upper limits for the branching fractions, but at LHC, a clear signal for the decay mode B0s,d → J/ψη is expected. The branching fraction of this decay mode can thus be measured, and other parameters such as B0s lifetime can be measured as well.<br/><br>
The decay mode B0s → J/ψη is analogous to the mode B0s → J/ψφ, which has been studied extensively in view of CP violation measurements. In these two decay modes, the CP asymmetry predicted by the Standard Model is very small, and the observation of a sizeable effect would be a signal of physics beyond the Standard Model. The decay mode J/ψη constitutes thus a cross-check for the mode J/ψφ. Furthermore, the former final state is a CP-eigenstate and no angular analysis is thus needed.<br/><br>
The reconstruction of η-mesons at LHC experiments has not been addressed before, and therefore the study presented here can also be regarded as an example of the physics prospects with η-mesons at the LHC.},
  author       = {Driouichi, Chafik and Eerola, Paula and Melcher, Martin and Ohlsson-Malek, Fairouz and Viret, Sebastian},
  issn         = {1435-3725},
  keyword      = {ATLAS B-physics LHC},
  language     = {eng},
  number       = {CN2},
  pages        = {1--13},
  publisher    = {Springer},
  series       = {EPJ direct},
  title        = {Observation potential of the decays B0s,d → J/ψη},
  volume       = {4},
  year         = {2002},
}