Journal articles
Determination of gamma and -2beta_s from charmless two-body decays of beauty mesons
R. Aaij
Y. Amhis
1
S. Barsuk
1
M. Borsato
1
O. Kochebina
1
J. Lefrançois
1
F. Machefert
1
A. Martin Sanchez
1
Marie Nicol
1
P. Robbe
1
M.-H. Schune
1
M. Teklishyn
1
A. Vallier
1
B. Viaud
1
Ziad Ajaltouni
2
M. Baalouch
2
E. Cogneras
2
O. Deschamps
2
I. El Rifai
2
M. Grabalosa Gándara
2
Pierre Henrard
2
M. Hoballah
2
R. Lefèvre
2
J. Maratas
2
S. Monteil
2
V. Niess
2
Pascal Perret
2
S. Akar
3
E. Aslanides
3
J. Cogan
3
W. Kanso
3
R. Legac
3
O. Leroy
3
G. Mancinelli
3
A. Mordà
3, 4
M. Perrin-Terrin
3
J. Serrano
3
A. Tsaregorodtsev
3
L. Beaucourt
5
M. Chefdeville
5
D. Decamp
5
N. Déléage
5
Ph. Ghez
5
J.-P. Lees
5
J.F. Marchand
5
M.-N. Minard
5
B. Pietrzyk
5
W. Qian
5
S. t'Jampens
5
V. Tisserand
5
E. Tournefier
5
E. Cogneras 2
Author IdHAL : eric-cogneras ORCID : https://orcid.org/0000-0002-8933-9427
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
M. Grabalosa Gándara 2
Author
S. Monteil 2
Author
V. Niess 2
Author
Pascal Perret 2
Author IdHAL : pascal-perret ORCID : https://orcid.org/0000-0002-5732-4343
S. Akar 3
Author
O. Leroy 3
Author IdHAL : olivier-leroy ORCID : https://orcid.org/0000-0002-2589-240X
G. Mancinelli 3
Author
A. Mordà 3, 4
Author
M. Perrin-Terrin 3
Author IdHAL : perrin-terrin ORCID : https://orcid.org/0000-0002-3568-1956
J. Serrano 3
Author IdHAL : justine-serrano arXiv : https://arxiv.org/a/Justine Serrano ORCID : https://orcid.org/0000-0003-2489-7812
A. Tsaregorodtsev 3
Author
L. Beaucourt 5
Author
M. Chefdeville 5
Author IdHAL : maximilien-chefdeville arXiv : https://arxiv.org/a/Maximilien Chefdeville MC ORCID : https://orcid.org/0000-0002-6553-6493
S. t'Jampens 5
Author IdHAL : stephane-tjampens ORCID : https://orcid.org/0000-0003-4249-6641
V. Tisserand 5
Author
E. Tournefier 5
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
CPT - Centre de Physique Théorique - UMR 7332 (Centre de Physique Théorique
Campus de Luminy, Case 907
163 Avenue de Luminy
13288 Marseille cedex 9, France - France)
- AMU - Aix Marseille Université : UMR7332 (Aix-Marseille Université Jardins du Pharo 58 Boulevard Charles Livon 13284 Marseille cedex 7 - France)
- UTLN - Université de Toulon : UMR7332 (Avenue de l'Université - BP 20132 - 83957 La Garde Cedex - France)
- CNRS - Centre National de la Recherche Scientifique : UMR7332 (France)
5
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 : Using the latest LHCb measurements of time-dependent CP violation in the B^0_s -> K^+K^- decay, a U-spin relation between the decay amplitudes of B^0_s -> K^+K^- and B^0 -> \pi^+\pi^- decay processes allows constraints to be placed on the angle gamma of the unitarity triangle and on the B^0_s mixing phase -2\beta_s. Results from an extended approach, which uses additional inputs on B^0 -> \pi^0\pi^0 and B^+ -> \pi^+\pi^0 decays from other experiments and exploits isospin symmetry, are also presented. The dependence of the results on the maximum allowed amount of U-spin breaking is studied. At 68% probability, the value \gamma = ( 63.5 +7.2 -6.7 ) degrees modulo 180 degrees is determined. In an alternative analysis, the value -2\beta_s = -0.12 +0.14 -0.16 rad is found. In both measurements, the uncertainties due to U-spin breaking effects up to 50% are included.
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Journal articles
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http://hal.in2p3.fr/in2p3-01056615
Contributor : Sabine Starita <>
Submitted on : Friday, January 23, 2015 - 11:20:21 AM
Last modification on : Thursday, February 25, 2021 - 10:58:33 AM
Long-term archiving on: : Friday, September 11, 2015 - 8:46:53 AM
Contributor : Sabine Starita <>
Submitted on : Friday, January 23, 2015 - 11:20:21 AM
Last modification on : Thursday, February 25, 2021 - 10:58:33 AM
Long-term archiving on: : Friday, September 11, 2015 - 8:46:53 AM
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Identifiers
- HAL Id : in2p3-01056615, version 1
- ARXIV : 1408.4368
- DOI : 10.1016/j.physletb.2014.12.015
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IN2P3 | UNIV-SAVOIE | UNIV-TLN | CPPM | LAPP | LAL | CNRS | UNIV-AMU | PRES_CLERMONT | LPC-CLERMONT | ACL-SF | ENIGMASS | UGA
Citation
R. Aaij, Y. Amhis, S. Barsuk, M. Borsato, O. Kochebina, et al.. Determination of gamma and -2beta_s from charmless two-body decays of beauty mesons. Physics Letters B, Elsevier, 2015, 741, pp.1-11. ⟨10.1016/j.physletb.2014.12.015⟩. ⟨in2p3-01056615⟩
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