Abstract
A search for the decay \( {B}_S^0\to {\overline{K}}^{\ast 0}{\mu}^{+}{\mu}^{-} \) is presented using data sets corresponding to 1.0, 2.0 and 1.6 fb−1 of integrated luminosity collected during pp collisions with the LHCb experiment at centre-of-mass energies of 7, 8 and 13 TeV, respectively. An excess is found over the background-only hypothesis with a significance of 3.4 standard deviations. The branching fraction of the \( {B}_S^0\to {\overline{K}}^{\ast 0}{\mu}^{+}{\mu}^{-} \) decay is determined to be \( \mathrm{\mathcal{B}}\left({B}_s^0\to {\overline{K}}^{\ast 0}{\mu}^{+}{\mu}^{-}\right)=\left[2.9\pm 1.0\left(\mathrm{stat}\right)\pm 0.2\left(\mathrm{syst}\right)\pm 0.3\left(\mathrm{norm}\right)\right]\times {10}^{-8} \), where the first and second uncertainties are statistical and systematic, respectively. The third uncertainty is due to limited knowledge of external parameters used to normalise the branching fraction measurement.
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ArXiv ePrint: 1804.07167
Deceased (I. Raniuk, Y. Shcheglov)
C. Göbel and V. Salustino Guimaraes are associated to Universidade Federal do Rio de Janeiro (UFRJ), Rio de Janeiro, Brazil
N. Beliy, J. He, W. Huang, P.-R. Li, X. Lyu, W. Qian, J. Qin, M. Szymanski, D. Vieira, Q. Xu, Y. Zheng, H. Cai, L. Sun, B. Dey, W. Hu, Y. Wang, D. Xiao, Y. Xie, M. Xu, H. Yin and J. Yu are associated to Center for High Energy Physics, Tsinghua University, Beijing, China
D. A. Milanes, I. A. Monroy and J. A. Rodriguez Lopez are associated to LPNHE, Université Pierre et Marie Curie, Université Paris Diderot, CNRS/IN2P3, Paris, France
O. Grünberg, M. Heß, N. Meinert, H. Viemann and R. Waldi are associated to Physikalisches Institut, Ruprecht-Karls-Universität Heidelberg, Heidelberg, Germany
T. Likhomanenko, A. Malinin, O. Morgunova, A. Nogay, A. Petrov, V. Shevchenko, S. Didenko, A. Golutvin, N. Polukhina, G. Panshin, S. Strokov and A. Vagner are associated to Institute of Theoretical and Experimental Physics (ITEP), Moscow, Russia
L. M. Garcia Martin, L. Henry, F. Martinez Vidal, A. Oyanguren, C. Remon Alepuz, J. Ruiz Vidal and C. Sanchez Mayordomo are associated to ICCUB, Universitat de Barcelona, Barcelona, Spain
C. J. G. Onderwater is associated to Nikhef National Institute for Subatomic Physics, Amsterdam, The Netherlands
C. L. Da Silva and J. M. Durham are associated to Syracuse University, Syracuse, NY, United States
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The LHCb collaboration., Aaij, R., Adeva, B. et al. Evidence for the decay \( {B}_S^0\to {\overline{K}}^{\ast 0}{\mu}^{+}{\mu}^{-} \). J. High Energ. Phys. 2018, 20 (2018). https://doi.org/10.1007/JHEP07(2018)020
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DOI: https://doi.org/10.1007/JHEP07(2018)020