Journal articles
Search for violations of Lorentz invariance and $ CPT$ symmetry in $ B^0_{(s)}$ mixing
R. Aaij
Y. Amhis
1
S. Barsuk
1
F. Fleuret
1
O. Kochebina
1
J. Lefrançois
1
Y. Li
1
F. Machefert
1
G. Manca
1
L.M. Massacrier
1
R. Quagliani
1
V. Renaudin
1
P. Robbe
1
M.-H. Schune
1
A. Vallier
1
B. Viaud
1
G. Wormser
1
Z.J. Ajaltouni
2
M. Baalouch
2
E. Cogneras
2
O. Deschamps
2
I. El Rifai
2
G. Gazzoni
2
M. Grabalosa Gándara
2
Pierre Henrard
2
M. Hoballah
2
M. Kozeiha
2
R. Lefèvre
2
J. Maratas
2
S. Monteil
2
V. Niess
2
P. Perret
2
S. Akar
3
E. Aslanides
3
J. Cogan
3
K. De Bruyn
3
W. Kanso
3
R. Legac
3
O. Leroy
3
G. Mancinelli
3
M. Martin
3
A. Mordà
3
J. Serrano
3
A. Tayduganov
3
A. Tsaregorodtsev
3
L. Beaucourt
4
M. Chefdeville
4
D. Decamp
4
N. Déléage
4
P. Ghez
4
J.-P. Lees
4
J.-F. Marchand
4
M.-N. Minard
4
B. Pietrzyk
4
S. t'Jampens
4
V. Tisserand
4
E. Tournefier
4
O. Deschamps 2
Author IdHAL : olivier-deschamps arXiv : http://arxiv.org/a/deschamps_o_1 ORCID : https://orcid.org/0000-0002-7047-6042
I. El Rifai 2
Author
G. Gazzoni 2
Author
M. Grabalosa Gándara 2
Author
M. Martin 3
Author
A. Mordà 3
Author
J. Serrano 3
Author IdHAL : justine-serrano
A. Tayduganov 3
Author
E. Tournefier 4
Author
1
LAL - Laboratoire de l'Accélérateur Linéaire (Centre Scientifique d'Orsay B.P. 34 91898 ORSAY Cedex - France)
- UP11 - Université Paris-Sud - Paris 11 (Bâtiment 300 - 91405 Orsay cedex - France)
- IN2P3 - Institut National de Physique Nucléaire et de Physique des Particules du CNRS (France)
- CNRS - Centre National de la Recherche Scientifique : UMR8607 (France)
2
LPC - Laboratoire de Physique Corpusculaire - Clermont-Ferrand (Campus des Cézeaux / 24 avenue des Landais / BP 80026 / 63171 Aubière Cedex - France)
- UBP - Université Blaise Pascal - Clermont-Ferrand 2 (34, avenue Carnot - BP 185 / 63006 Clermont-Ferrand cedex - France)
- IN2P3 - Institut National de Physique Nucléaire et de Physique des Particules du CNRS (France)
- CNRS - Centre National de la Recherche Scientifique : UMR6533 (France)
3
CPPM - Centre de Physique des Particules de Marseille (163, avenue de Luminy - Case 902 - 13288 Marseille cedex 09 - France)
- AMU - Aix Marseille Université : UMR7346 (Aix-Marseille Université Jardins du Pharo 58 Boulevard Charles Livon 13284 Marseille cedex 7 - France)
- IN2P3 - Institut National de Physique Nucléaire et de Physique des Particules du CNRS (France)
- CNRS - Centre National de la Recherche Scientifique : UMR7346 (France)
4
LAPP - Laboratoire d'Annecy de Physique des Particules (9 Chemin de Bellevue - BP 110 - 74941 Annecy-le-Vieux CEDEX - France - France)
- IN2P3 - Institut National de Physique Nucléaire et de Physique des Particules du CNRS (France)
- USMB [Université de Savoie] [Université de Chambéry] - Université Savoie Mont Blanc (27, rue Marcoz - 73000 Chambéry - France)
- CNRS - Centre National de la Recherche Scientifique : UMR5814 (France)
Abstract : Violations of $ CPT$ symmetry and Lorentz invariance are searched for by studying interference effects in $ B^0$ mixing and in $ B^0_s$ mixing. Samples of $ B^0\to J/\psi K^0_{\mathrm{S}}$ and $ B^0_s\to J/\psi K^+ K^-$ decays are recorded by the LHCb detector in proton--proton collisions at centre-of-mass energies of 7 and 8 TeV, corresponding to an integrated luminosity of 3 fb$^{-1}$. No periodic variations of the particle-antiparticle mass differences are found, consistent with Lorentz invariance and $ CPT$ symmetry. Results are expressed in terms of the Standard Model Extension parameter $\Delta a_{\mu}$ with precisions of $ \mathcal{O}(10^{-15})$ and $ \mathcal{O}(10^{-14})$ GeV for the $ B^0$ and $ B^0_s$ systems, respectively. With no assumption on Lorentz (non-)invariance, the $ CPT$-violating parameter $z$ in the $ B^0_s$ system is measured for the first time and found to be $ \mathcal{R}e(z) = -0.022 \pm 0.033 \pm 0.005$ and $ \mathcal{I}m(z) = 0.004 \pm 0.011\pm 0.002$, where the first uncertainties are statistical and the second systematic.
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Journal articles
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http://hal.in2p3.fr/in2p3-01289195
Contributor : Sabine Starita <>
Submitted on : Wednesday, March 16, 2016 - 11:56:17 AM
Last modification on : Friday, November 6, 2020 - 11:44:14 AM
Contributor : Sabine Starita <>
Submitted on : Wednesday, March 16, 2016 - 11:56:17 AM
Last modification on : Friday, November 6, 2020 - 11:44:14 AM
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Identifiers
- HAL Id : in2p3-01289195, version 1
- ARXIV : 1603.04804
- DOI : 10.1103/PhysRevLett.116.241601
Collections
IN2P3 | LAL | CNRS | LAPP | LPC-CLERMONT | CPPM | UNIV-SAVOIE | PRES_CLERMONT | UNIV-AMU | UGA
Citation
R. Aaij, Y. Amhis, S. Barsuk, F. Fleuret, O. Kochebina, et al.. Search for violations of Lorentz invariance and $ CPT$ symmetry in $ B^0_{(s)}$ mixing. Physical Review Letters, American Physical Society, 2016, 116, pp.241601. ⟨10.1103/PhysRevLett.116.241601⟩. ⟨in2p3-01289195⟩
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