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Angular analysis of $B^0 \to K^\ast(892)^0 \ell^+ \ell^-$

Publication ,  Journal Article
Collaboration, B; Abdesselam, A; Adachi, I; Adamczyk, K; Aihara, H; Said, SA; Arinstein, K; Arita, Y; Asner, DM; Aso, T; Atmacan, H; Aushev, T ...
April 14, 2016

We present a measurement of angular observables, $P_4'$, $P_5'$, $P_6'$, $P_8'$, in the decay $B^0 \to K^\ast(892)^0 \ell^+ \ell^-$, where $\ell^+\ell^-$ is either $e^+e^-$ or $\mu^+\mu^-$. The analysis is performed on a data sample corresponding to an integrated luminosity of $711~\mathrm{fb}^{-1}$ containing $772\times 10^{6}$ $B\bar B$ pairs, collected at the $\Upsilon(4S)$ resonance with the Belle detector at the asymmetric-energy $e^+e^-$ collider KEKB. Four angular observables, $P_{4,5,6,8}'$ are extracted in five bins of the invariant mass squared of the lepton system, $q^2$. We compare our results for $P_{4,5,6,8}'$ with Standard Model predictions including the $q^2$ region in which the LHCb collaboration reported the so-called $P_5'$ anomaly.

Duke Scholars

Publication Date

April 14, 2016
 

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Collaboration, B., Abdesselam, A., Adachi, I., Adamczyk, K., Aihara, H., Said, S. A., … Zyukova, O. (2016). Angular analysis of $B^0 \to K^\ast(892)^0 \ell^+ \ell^-$.
Collaboration, Belle, A. Abdesselam, I. Adachi, K. Adamczyk, H. Aihara, S Al Said, K. Arinstein, et al. “Angular analysis of $B^0 \to K^\ast(892)^0 \ell^+ \ell^-$,” April 14, 2016.
Collaboration B, Abdesselam A, Adachi I, Adamczyk K, Aihara H, Said SA, et al. Angular analysis of $B^0 \to K^\ast(892)^0 \ell^+ \ell^-$. 2016 Apr 14;
Collaboration, Belle, et al. Angular analysis of $B^0 \to K^\ast(892)^0 \ell^+ \ell^-$. Apr. 2016.
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Publication Date

April 14, 2016