Journal articles
Observation of the decay B¯¯¯0s→ψ(2S)K+π−
R. Aaij
Y. Amhis
1
S. Barsuk
1
M. Borsato
1
O. Kochebina
1
J. Lefrançois
1
Y. Li
1
F. Machefert
1
R. Quagliani
1
P. Robbe
1
M.-H. Schune
1
M. Teklishyn
1
A. Vallier
1
B. Viaud
1
G. Wormser
1
Ziad 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
R. Lefèvre
2
J. Maratas
2
S. Monteil
2
V. Niess
2
P. Perret
2
Akar S.
3
Aslanides E.
3
Cogan J.
3
Kanso W.
3
Legac R.
3
O. Leroy
3
Mancinelli G.
3
Mordà A.
3
J. Serrano
3
Tsaregorodtsev A.
3
L. Beaucourt
4
M. Chefdeville
4
D. Decamp
4
N. Déléage
4
Ph. Ghez
4
J.-P. Lees
4
J.F. Marchand
4
M.-N. Minard
4
B. Pietrzyk
4
W. Qian
4
S. t'Jampens
4
V. Tisserand
4
E. Tournefier
4
M. Baalouch 2
Author
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
P. Perret 2
Author IdHAL : pascal-perret ORCID : https://orcid.org/0000-0002-5732-4343
Akar S. 3
Author
Aslanides E. 3
Author
Cogan J. 3
Author
Kanso W. 3
Author
Legac R. 3
Author
O. Leroy 3
Author IdHAL : olivier-leroy ORCID : https://orcid.org/0000-0002-2589-240X
Mancinelli G. 3
Author IdHAL : giampiero-mancinelli
Mordà A. 3
Author
J. Serrano 3
Author IdHAL : justine-serrano arXiv : https://arxiv.org/a/Justine Serrano ORCID : https://orcid.org/0000-0003-2489-7812
Tsaregorodtsev A. 3
Author
L. Beaucourt 4
Author
M. Chefdeville 4
Author IdHAL : maximilien-chefdeville ORCID : https://orcid.org/0000-0002-6553-6493 arXiv : https://arxiv.org/a/Maximilien Chefdeville MC
D. Decamp 4
Author
N. Déléage 4
Author
Ph. Ghez 4
Author
W. Qian 4
Author
S. t'Jampens 4
Author IdHAL : stephane-tjampens ORCID : https://orcid.org/0000-0003-4249-6641
V. Tisserand 4
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)
- CNRS - Centre National de la Recherche Scientifique : UMR7346 (France)
- IN2P3 - Institut National de Physique Nucléaire et de Physique des Particules du CNRS (France)
- AMU - Aix Marseille Université : UMR7346 (Aix-Marseille Université Jardins du Pharo 58 Boulevard Charles Livon 13284 Marseille cedex 7 - 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 : The decay B¯¯¯0s→ψ(2S)K+π− is observed using a data set corresponding to an integrated luminosity of 3.0fb−1 collected by the LHCb experiment in pp collisions at centre-of-mass energies of 7 and 8 TeV. The branching fraction relative to the B0→ψ(2S)K+π− decay mode is measured to be
B(B¯¯¯0s→ψ(2S)K+π−)B(B0→ψ(2S)K+π−)=5.38±0.36(stat)±0.22(syst)±0.31(fs/fd)%,
where fs/fd indicates the uncertainty due to the ratio of probabilities for a b quark to hadronise into a B0s or B0 meson. Using an amplitude analysis, the fraction of decays proceeding via an intermediate K∗(892)0 meson is measured to be 0.645±0.049(stat)±0.049(syst) and its longitudinal polarisation fraction is 0.524±0.056(stat)±0.029(syst). The relative branching fraction for this component is determined to be
B(B¯¯¯0s→ψ(2S)K∗(892)0)B(B0→ψ(2S)K∗(892)0)=5.58±0.57(stat)±0.40(syst)±0.32(fs/fd)%.
In addition, the mass splitting between the B0s and B0 mesons is measured as
M(B0s)−M(B0)=87.45±0.44(stat)±0.07(syst)MeV/c2.
Document type :
Journal articles
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http://hal.in2p3.fr/in2p3-01135717
Contributor : Sabine Starita <>
Submitted on : Wednesday, March 25, 2015 - 5:25:25 PM
Last modification on : Thursday, February 25, 2021 - 10:58:34 AM
Contributor : Sabine Starita <>
Submitted on : Wednesday, March 25, 2015 - 5:25:25 PM
Last modification on : Thursday, February 25, 2021 - 10:58:34 AM
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Identifiers
- HAL Id : in2p3-01135717, version 1
- ARXIV : 1503.07112
- DOI : 10.1016/j.physletb.2015.06.038
Collections
IN2P3 | LAL | LPC-CLERMONT | CNRS | PRES_CLERMONT | UNIV-AMU | CPPM | LAPP | UNIV-SAVOIE | UGA
Citation
R. Aaij, Y. Amhis, S. Barsuk, M. Borsato, O. Kochebina, et al.. Observation of the decay B¯¯¯0s→ψ(2S)K+π−. Physics Letters B, Elsevier, 2015, 747, pp.484-494. ⟨10.1016/j.physletb.2015.06.038⟩. ⟨in2p3-01135717⟩
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