Measurement of angular parameters from the decay B⁰→ K*⁰ μ⁺μ⁻ in proton-proton collisions at √s = 8 TeV

• Main Authors: Abercrombie, Daniel Robert (Author), Allen, Brandon Leigh (Author), Azzolini, Virginia (Author), Barbieri, Richard Alexander (Author), Baty, Austin Alan (Author), Bi, Ran (Author), Brandt, Stephanie Akemi (Author), Busza, Wit (Author), Cali, Ivan Amos (Author), D'Alfonso, Mariarosaria (Author), Demiragli, Zeynep (Author), Gomez-Ceballos, Guillelmo (Author), Goncharov, Maxim (Author), Hsu, Dylan George (Author), Hu, Miao (Author), Iiyama, Yutaro (Author), Innocenti, Gian Michele (Author), Klute, Markus (Author), Kovalskyi, Dmytro (Author), Lai, Yue Shi (Author), Lee, Youjin (Author), Levine, Alan M (Author), Luckey Jr, P David (Author), Maier, Benedikt (Author), Marini, Andrea Carlo (Author), McGinn, Christopher Francis (Author), Mironov, Camelia Maria (Author), Narayanan, S. (Author), Niu, X. (Author), Paus, Christoph M. E. (Author), Roland, Christof E (Author), Roland, Gunther M (Author), Salfeld-Nebgen, Jakob Maxillian Henry (Author), Stephans, George S. F. (Author), Tatar, Kaya (Author), Velicanu, Dragos Alexandru (Author), Wang, Jing (Author), Wang, Taiwei (Author), Wyslouch, Boleslaw (Author), CMS Collaboration (Author)
• Other Authors: Massachusetts Institute of Technology. Department of Physics (Contributor), Massachusetts Institute of Technology. Laboratory for Nuclear Science (Contributor), Massachusetts Institute of Technology. Department of Nuclear Science and Engineering (Contributor), Massachusetts Institute of Technology. Department of Mechanical Engineering (Contributor)
• Format: Article
• Language: English
• Published: Elsevier BV, 2019-06-13T20:56:56Z.
• Subjects: Article
• Online Access: Get fulltext

 Angular distributions of the decay B⁰→ K*⁰ μ⁺μ⁻ are studied using a sample of proton-proton collisions at √s = 8 TeV collected with the CMS detector at the LHC, corresponding to an integrated luminosity of 20.5fb⁻¹. An angular analysis is performed to determine the P1and P5'parameters, where the P5'parameter is of particular interest because of recent measurements that indicate a potential discrepancy with the standard model predictions. Based on a sample of 1397 signal events, the P1and P5'parameters are determined as a function of the dimuon invariant mass squared. The measurements are in agreement with predictions based on the standard model.