First observation of the decay B0s→K0SK∗(892)0

R. Aaij; Y. Amhis; S. Barsuk; M. Borsato; O. Kochebina; J. Lefrançois; Y. Li; F. Machefert; R. Quagliani; P. Robbe; M.-H. Schune; M. Teklishyn; A. Vallier; B. Viaud; G. Wormser; Z.J. Ajaltouni; M. Baalouch; E. Cogneras; O. Deschamps; I. El Rifai; G. Gazzoni; M. Grabalosa Gándara; Pierre Henrard; M. Hoballah; R. Lefèvre; J. Maratas; S. Monteil; V. Niess; P. Perret; L. Beaucourt; M. Chefdeville; D. Decamp; N. Déléage; Ph. Ghez; J.-P. Lees; J.-F. Marchand; M.-N. Minard; B. Pietrzyk; W. Qian; S. T'Jampens; V. Tisserand; E. Tournefier; S. Akar; E. Aslanides; J. Cogan; W. Kanso; R. Legac; O. Leroy; G. Mancinelli; A. Mordà; J. Serrano; A. Tsaregorodtsev

doi:10.1007/JHEP01(2016)012

First observation of the decay B0s→K0SK∗(892)0

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 Z.J. Ajaltouni ² M. Baalouch ² E. Cogneras ² O. Deschamps ² I. El Rifai 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 L. Beaucourt ³ M. Chefdeville ³ D. Decamp ³ N. Déléage ³ Ph. Ghez ³ J.-P. Lees ³ J.-F. Marchand ³ M.-N. Minard ³ B. Pietrzyk ³ W. Qian ³ S. T'Jampens ³ V. Tisserand ³ E. Tournefier ³ S. Akar ⁴ E. Aslanides ⁴ J. Cogan ⁴ W. Kanso ⁴ R. Legac ⁴ O. Leroy ⁴ G. Mancinelli ⁴ A. Mordà ⁴ J. Serrano ⁴ A. Tsaregorodtsev ⁴

1 LAL - Laboratoire de l'Accélérateur Linéaire

2 LPC - Laboratoire de Physique Corpusculaire - Clermont-Ferrand

3 LAPP/Laboratoire d'Annecy-le-Vieux de Physique des Particules - Laboratoire d'Annecy de Physique des Particules

4 CPPM - Centre de Physique des Particules de Marseille

Abstract : A search for B0(s)→K0SK∗(892)0 decays is performed using pp collision data, corresponding to an integrated luminosity of 1.0 fb−1, collected with the LHCb detector at a centre-of-mass energy of 7 TeV. The B0s→K0SK∗(892)0 decay is observed for the first time, with a significance of 7.1 standard deviations. The branching fraction is measured to be B(B0s→K0SK∗(892)0)=(10.9±2.5±1.2)×10−6, where the first uncertainty is statistical and the second is systematic. No evidence is found for the decay B0→K0SK∗(892)0 and an upper limit is set on the branching fraction, B(B0→K0SK∗(892)0)<0.64 ×10−6, at 90% confidence level. All results are consistent with Standard Model predictions.

Type de document :

Article dans une revue

Journal of High Energy Physics, Springer Verlag (Germany), 2016, 01 (012), 〈10.1007/JHEP01(2016)012〉

Domaine :

Physique [physics] / Physique des Hautes Energies - Expérience [hep-ex]

Liste complète des métadonnées

http://hal.in2p3.fr/in2p3-01169711
Contributeur : Sabine Starita <>
Soumis le : mardi 30 juin 2015 - 09:55:22
Dernière modification le : jeudi 18 janvier 2018 - 01:56:28

First observation of the decay B0s→K0SK∗(892)0

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First observation of the decay B0s→K0SK∗(892)0

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