Lepton-Flavor-Dependent Angular Analysis of B→K∗ℓ+ℓ-

Journal: Physical Review Letters

Published: 2017-03-13

DOI: 10.1103/physrevlett.118.111801

Affiliations: 77

Authors: 205

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Research Highlight

A taste of things to come

© Pobytov/Getty

© Pobytov/Getty

Scientists have investigated one of the cornerstones of the Standard Model of particle physics in the search for new physics, according to a study published in Physical Review Letters.

Recent findings have challenged one of the key predictions of the Standard Model — lepton flavour universality (LFU), in which elementary particles called leptons interact in the same way with the weak nuclear force responsible for radioactive decay, regardless of their properties or ‘flavours’.

To test for discrepancies in LFU, an international team of physicists, including researchers from the Moscow Engineering Physics Institute, used data from the Belle detector at the KEKB collider in Japan to explore the decay of a particular type of lepton, called a B meson.

The researchers found the data was consistent with Standard Model predictions, indicating that LFU was upheld for this decay and narrowing the search for new physics.

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  1. Phys. Rev. Lett. 118, 111801 (2017). doi: 10.1103/physrevlett.118.111801
Institutions Share
High Energy Accelerator Research Organization (KEK), Japan 0.06
German Electron Synchrotron (DESY), Germany 0.04
School of Physics, UniMelb, Australia 0.04
G.I. Budker Institute of Nuclear Physics (INP), SB RAS, Russia 0.03
Novosibirsk State University (NSU), Russia 0.03
Jozef Stefan Institute (IJS), Slovenia 0.03
The Graduate University for Advanced Studies (Sokendai), Japan 0.03
University of Hawai'i at Manoa (UH Mānoa), United States of America (USA) 0.03
Niigata University, Japan 0.03
Pacific Northwest National Laboratory (PNNL), United States of America (USA) 0.02
Tata Institute of Fundamental Research (TIFR), India 0.02
Kyungpook National University (KNU), South Korea 0.02
Graduate School / School of Science, Nagoya University, Japan 0.02
Wayne State University, United States of America (USA) 0.02
Faculty of Mathematics and Physics (FMP), CU, Czech Republic 0.02
University of Cincinnati (UC), United States of America (USA) 0.02
Department of Physics, NTU, Taiwan 0.02
Virginia Polytechnic Institute and State University (Virginia Tech), United States of America (USA) 0.02
Max Planck Institute for Physics (MPP), Germany 0.02
Moscow Institute of Physics and Technology - State University (MIPT), Russia 0.02
P.N. Lebedev Physical Institute (LPI), RAS, Russia 0.02
University of Pittsburgh (Pitt), United States of America (USA) 0.01
Ludwig Maximilians University of Munich (LMU), Germany 0.01
Yonsei University, South Korea 0.01
Korea University, South Korea 0.01
Department of Physics, Tohoku University, Japan 0.01
The Henryk Niewodniczanski Institute of Nuclear Physics (IFJ PAN), PAS, Poland 0.01
Department of Physics, UTokyo, Japan 0.01
Hanyang University (HYU), South Korea 0.01
Indian Institute of Technology Madras (IIT Madras), India 0.01
INFN Section in Torino, Italy 0.01
National Research Nuclear University MEPhI (Moscow Engineering Physics Institute), Russia 0.01
Institute of High Energy Physics (IHEP), CAS, China 0.01
Tokyo Institute of Technology (Tokyo Tech), Japan 0.01
TUM Department of Physics, Germany 0.01
Tokyo Metropolitan University (TMU), Japan 0.01
School of Physics, USYD, Australia 0.01
Giessen University (JLU), Germany 0.01
Indian Institute of Technology Guwahati (IIT Guwahati), India 0.01
Kennesaw State University (KSU), United States of America (USA) 0.01
University of Science and Technology of China (USTC), China 0.01
University of Bonn (Uni Bonn), Germany 0.01
Nara Women's University (NWU), Japan 0.01
Institute for Nuclear Physics (IKP), KIT, Germany 0.01
Indiana University Bloomington (IUB), United States of America (USA) 0.01
Sungkyunkwan University (SKKU), South Korea 0.01
The Nippon Dental University, Japan 0.01
Department of Physics, UT, Saudi Arabia 0.01
University of the Basque Country (UPV/EHU), Spain 0.01
Faculty of Mathematics and Physics (FMF), University of Ljubljana, Slovenia 0.01
National United University, Taiwan 0
Institute of Mathematical Sciences (IMSc), India 0
Indian Institute of Technology Bhubaneswar (IIT-BBS), India 0
Beihang University (BUAA), China 0
Yamagata University, Japan 0
Kanagawa University, Japan 0
Institute for High Energy Physics (HEPHY), ÖAW, Austria 0
Swiss Federal Institute of Technology Lausanne (EPFL), Switzerland 0
University of Florida (UF), United States of America (USA) 0
Toho University, Japan 0
Osaka City University (OCU), Japan 0
Chonnam National University, South Korea 0
Soongsil University, South Korea 0
University of Maribor, Slovenia 0
National Central University (NCU), Taiwan 0
Earthquake Research Institute (ERI), UTokyo, Japan 0
Korea Institute of Science and Technology Information (KISTI), South Korea 0
University of Miyazaki, Japan 0
Stefan Meyer Institute for Subatomic Physics (SMI), ÖAW, Austria 0
Department of Physics, KAU, Saudi Arabia 0
Kobayashi-Maskawa Institute for the Origin of Particles and the Universe (KMI), Nagoya University, Japan 0
TUM Cluster of Excellence - Origin and Structure of the Universe (Excellence Cluster Universe), Germany 0
University of Turin (UNITO), Italy 0
Ikerbasque - Basque Foundation for Science, Spain 0
Showa Pharmaceutical University, Japan 0
Theory Center, KEK, Japan 0
RIKEN Nishina Center for Accelerator-Based Science (RNC), Japan 0