Angular analysis of the B0 → K⁎(892)0μ+μ− decay in proton-proton collisions at <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" altimg="si1.svg"> <mml:msqrt> <mml:mrow> <mml:mi>s</mml:mi> </mml:mrow> </mml:msqrt> <mml:mo linebreak="goodbreak" linebreakstyle="after">=</mml:mo> <mml:mn>13</mml:mn> <mml:mspace width="0.2em"/> <mml:mtext>TeV</mml:mtext> </mml:math>
Aram Hayrapetyan, A. Tumasyan, W. Adam, Janik Walter Andrejkovic, L. Benato, T. Bergauer, S. Chatterjee, K. Damanakis, M. Dragicevic, Priya Sajid Hussain, M. Jeitler, Natascha Krammer, A. Li, D. Liko, I. Mikulec, J. Schieck, R. Schöfbeck, D. Schwarz, M. Sonawane, W. Waltenberger, C.-E. Wulz, X. Janssen, T. Van Laer, P. Van Mechelen, Nordin Breugelmans, J. D’Hondt, Soumya Dansana, A. De Moor, M. Delcourt, Felix Heyen, S. Lowette, I. Makarenko, D. Müller, S. Tavernier, M. Tytgat, G. P. Van Onsem, S. Van Putte, D. Vannerom, B. Bilin, B. Clerbaux, A. Das, I. De Bruyn, G. De Lentdecker, Hugues Evard, L. Favart, P. Gianneios, J. Jaramillo, Ali Khalilzadeh, Fakhri Alam Khan, K. Lee, A. Malara, S. Paredes, Muhammad Aamir Shahzad, Laurent Thomas, M. Vanden Bemden, C. Vander Velde, P. Vanlaer, M. De Coen, D. Dobur, G. Gökbulut, Y. Hong, J. Knolle, Luka Lambrecht, David Marckx, K. Mota Amarilo, K. Skovpen, N. Van Den Bossche, Jan van der Linden, Liam Wezenbeek, A. Benecke, A. Bethani, G. Bruno, C. Caputo, J. De Favereau De Jeneret, C. Delaere, I. S. Donertas, A. Giammanco, Ahmet Oguz Guzel, Sa. Jain, V. Lemaitre, J. Lidrych, Paola Mastrapasqua, T. T. Tran, G. A. Alves, E. Coelho, G. Correia Silva, C. Hensel, T. Menezes De Oliveira, C. Mora Herrera, P. Rebello Teles, M. Soeiro, A. Vilela Pereira, W. L. Aldá Júnior, M. Barroso Ferreira Filho, H. Brandao Malbouisson, W. Carvalho, J. Chinellato, E. M. Da Costa, G. G. Da Silveira, D. De Jesus Damião
Abstract
A full set of optimized observables is measured in an angular analysis of the decay B 0 → K ⁎ ( 892 ) 0 μ + μ − using a sample of proton-proton collisions at s = 13 TeV , collected with the CMS detector at the LHC, corresponding to an integrated luminosity of 140 fb − 1 . The analysis is performed in six bins of the squared invariant mass of the dimuon system, q 2 , over the range 1.1 < q 2 < 16 GeV 2 . The results are among the most precise experimental measurements of the angular observables for this decay and are compared to a variety of predictions based on the standard model. Some of these predictions exhibit tension with the measurements.