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
The University of Melbourne (UniMelb), Australia 0.04
G.I. Budker Institute of Nuclear Physics (INP), SB RAS, Russia 0.03
Novosibirsk State University (NSU), Russia 0.03
The Graduate University for Advanced Studies (Sokendai), Japan 0.03
Jozef Stefan Institute (IJS), Slovenia 0.03
University of Hawai'i at Manoa (UH Mānoa), United States of America (USA) 0.03
Niigata University, Japan 0.03
Kyungpook National University (KNU), South Korea 0.02
Tata Institute of Fundamental Research (TIFR), India 0.02
Pacific Northwest National Laboratory (PNNL), United States of America (USA) 0.02
Nagoya University, Japan 0.02
Wayne State University, United States of America (USA) 0.02
National Taiwan University (NTU), Taiwan 0.02
University of Cincinnati (UC), United States of America (USA) 0.02
The University of Tokyo (UTokyo), Japan 0.02
Charles University (CU), Czech Republic 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
Korea University, South Korea 0.01
Yonsei University, South Korea 0.01
University of Pittsburgh (Pitt), United States of America (USA) 0.01
Ludwig Maximilians University of Munich (LMU), Germany 0.01
Tohoku University, Japan 0.01
Indian Institute of Technology Madras (IIT Madras), India 0.01
The Henryk Niewodniczanski Institute of Nuclear Physics (IFJ PAN), PAS, Poland 0.01
Hanyang University (HYU), South Korea 0.01
INFN Section in Torino, Italy 0.01
National Research Nuclear University MEPhI (Moscow Engineering Physics Institute), Russia 0.01
University of Science and Technology of China (USTC), China 0.01
Giessen University (JLU), Germany 0.01
Indian Institute of Technology Guwahati (IIT Guwahati), India 0.01
The University of Sydney (USYD), Australia 0.01
Technical University of Munich (TUM), Germany 0.01
Kennesaw State University (KSU), United States of America (USA) 0.01
Tokyo Institute of Technology (Tokyo Tech), Japan 0.01
Sungkyunkwan University (SKKU), South Korea 0.01
Indiana University Bloomington (IUB), United States of America (USA) 0.01
Tokyo Metropolitan University (TMU), Japan 0.01
Nara Women's University (NWU), Japan 0.01
Division V - Physics and Mathematics, KIT, Germany 0.01
University of Bonn (Uni Bonn), Germany 0.01
Institute of High Energy Physics (IHEP), CAS, China 0.01
University of Tabuk (UT), Saudi Arabia 0.01
University of the Basque Country (UPV/EHU), Spain 0.01
The Nippon Dental University, Japan 0.01
University of Ljubljana, Slovenia 0.01
Beihang University (BUAA), China 0
Institute of Mathematical Sciences (IMSc), India 0
National United University, Taiwan 0
Yamagata University, Japan 0
Institute for High Energy Physics (HEPHY), ÖAW, Austria 0
Kanagawa University, Japan 0
Korea Institute of Science and Technology Information (KISTI), South Korea 0
Stefan Meyer Institute for Subatomic Physics (SMI), ÖAW, Austria 0
Swiss Federal Institute of Technology Lausanne (EPFL), Switzerland 0
Toho University, Japan 0
Indian Institute of Technology Bhubaneswar (IIT-BBS), India 0
National Central University (NCU), Taiwan 0
University of Florida (UF), United States of America (USA) 0
University of Maribor, Slovenia 0
Chonnam National University, South Korea 0
Soongsil University, South Korea 0
University of Miyazaki, Japan 0
Osaka City University (OCU), 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
King Abdulaziz University (KAU), Saudi Arabia 0
Showa Pharmaceutical University, Japan 0
Theory Center, KEK, Japan 0
RIKEN Nishina Center for Accelerator-Based Science (RNC), Japan 0