Measurements of the S-wave fraction in B0→K+π−μ+μ− decays and the B0→K∗(892)0μ+μ− differential branching fraction

R. Aaij L. Beaucourt 1 M. Chefdeville 1 D. Decamp 1 N. Déléage 1 P. Ghez 1 J.-P. Lees 1 J.-F. Marchand 1 M.-N. Minard 1 B. Pietrzyk 1 S. t'Jampens 1 V. Tisserand 1 E. Tournefier 1 S. Akar 2 E. Aslanides 2 J. Cogan 2 K. De Bruyn 2 W. Kanso 2 R. Legac 2 O. Leroy 2 G. Mancinelli 2 M. Martin 2 A. Mordà 2 J. Serrano 2 A. Tayduganov 2 A. Tsaregorodtsev 2 Z.J. Ajaltouni 3 M. Baalouch 3 E. Cogneras 3 O. Deschamps 3 G. Gazzoni 3 M. Grabalosa Gándara 3 P. Henrard 3 M. Kozeiha 3 R. Lefèvre 3 J. Maratas 3 S. Monteil 3 V. Niess 3 P. Perret 3 Y. Amhis 4 S. Barsuk 4 F. Fleuret 4 O. Kochebina 4 J. Lefrançois 4 Y. Li 4 F. Machefert 4 G. Manca 4 L.M. Massacrier R. Quagliani 4 V. Renaudin 4 P. Robbe 4 M.-H. Schune 4 A. Vallier 4 B. Viaud 4 G. Wormser 4
1 LAPP/Laboratoire d'Annecy-le-Vieux de Physique des Particules - Laboratoire d'Annecy de Physique des Particules
2 CPPM - Centre de Physique des Particules de Marseille
3 LPC - Laboratoire de Physique Corpusculaire - Clermont-Ferrand
4 LAL - Laboratoire de l'Accélérateur Linéaire
Abstract : A measurement of the differential branching fraction of the decay B0→K∗(892)0μ+μ− is presented together with a determination of the S-wave fraction of the K+π− system in the decay B0→K+π−μ+μ−. The analysis is based on pp-collision data corresponding to an integrated luminosity of 3\,fb−1 collected with the LHCb experiment. The measurements are made in bins of the invariant mass squared of the dimuon system, q2. Precise theoretical predictions for the differential branching fraction of B0→K∗(892)0μ+μ− decays are available for the q2 region 1.1
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Submitted on : Thursday, June 16, 2016 - 9:12:15 AM
Last modification on : Monday, June 3, 2019 - 1:38:03 PM

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IN2P3 | LPC-CLERMONT | LAPP | CNRS | CPPM | UNIV-SAVOIE | UNIV-AMU | PRES_CLERMONT | LAL | UGA | UNIV-PARIS-SACLAY

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R. Aaij, L. Beaucourt, M. Chefdeville, D. Decamp, N. Déléage, et al.. Measurements of the S-wave fraction in B0→K+π−μ+μ− decays and the B0→K∗(892)0μ+μ− differential branching fraction. Journal of High Energy Physics, Springer Verlag (Germany), 2016, 11, pp.047. ⟨10.1007/JHEP11(2016)047⟩. ⟨in2p3-01332491⟩

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