Observation of D0→ρ0γ and Search for CP Violation in Radiative Charm Decays

Journal: Physical Review Letters

Published: 2017-01-31

DOI: 10.1103/physrevlett.118.051801

Affiliations: 80

Authors: 164

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Research Highlight

Getting to the heart of the matter imbalance

© kyoshino / Getty Images

© kyoshino / Getty Images

Scientists are exploring new physics to explain why there is more matter than antimatter in the universe, according to a study published in Physical Review Letters.

The Big Bang should have created equal amounts of matter and antimatter in the early universe, but today there is far more matter than antimatter. The existence of so-called charge-parity (CP) violations, differences in the behaviour of matter and antimatter particles, could account for this imbalance.

Using data from the Belle detector at the KEKB collider in Japan, an international team of physicists, including researchers from the Moscow Engineering Physics Institute, have for the first time observed the decay of subatomic particles called charmed or ‘D’ mesons, which are the lightest mesons, allowing them to search for CP violations.

Although no CP violations were observed, the work could provide deeper insights into the origins of matter.

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  1. Phys. Rev. Lett. 118, 051801 (2017). doi: 10.1103/physrevlett.118.051801
Institutions Share
Jozef Stefan Institute (IJS), Slovenia 0.05
High Energy Accelerator Research Organization (KEK), Japan 0.05
G.I. Budker Institute of Nuclear Physics (INP), SB RAS, Russia 0.04
Novosibirsk State University (NSU), Russia 0.04
Pacific Northwest National Laboratory (PNNL), United States of America (USA) 0.04
Wayne State University, United States of America (USA) 0.03
Tata Institute of Fundamental Research (TIFR), India 0.03
Nagoya University, Japan 0.02
Korea University, South Korea 0.02
The University of Melbourne (UniMelb), Australia 0.02
Indian Institute of Technology Madras (IIT Madras), India 0.02
Niigata University, Japan 0.02
University of Cincinnati (UC), United States of America (USA) 0.02
The Graduate University for Advanced Studies (Sokendai), Japan 0.02
German Electron Synchrotron (DESY), Germany 0.02
Hanyang University (HYU), South Korea 0.02
Kyungpook National University (KNU), South Korea 0.02
Charles University (CU), Czech Republic 0.02
Ludwig Maximilians University of Munich (LMU), Germany 0.02
National Taiwan University (NTU), Taiwan 0.02
Virginia Polytechnic Institute and State University (Virginia Tech), United States of America (USA) 0.02
Moscow Institute of Physics and Technology - State University (MIPT), Russia 0.01
P.N. Lebedev Physical Institute (LPI), RAS, Russia 0.01
National Research Nuclear University MEPhI (Moscow Engineering Physics Institute), Russia 0.01
Yonsei University, South Korea 0.01
University of Science and Technology of China (USTC), China 0.01
Kennesaw State University (KSU), United States of America (USA) 0.01
Indiana University Bloomington (IUB), United States of America (USA) 0.01
Tohoku University, Japan 0.01
Kanagawa University, Japan 0.01
Technical University of Munich (TUM), Germany 0.01
Tokyo Institute of Technology (Tokyo Tech), Japan 0.01
University of Florida (UF), United States of America (USA) 0.01
Nara Women's University (NWU), Japan 0.01
The University of Tokyo (UTokyo), Japan 0.01
The Henryk Niewodniczanski Institute of Nuclear Physics (IFJ PAN), PAS, Poland 0.01
University of Hawai'i at Manoa (UH Mānoa), United States of America (USA) 0.01
Max Planck Institute for Physics (MPP), Germany 0.01
University of Tabuk (UT), Saudi Arabia 0.01
Sungkyunkwan University (SKKU), South Korea 0.01
Tokyo Metropolitan University (TMU), Japan 0.01
University of Nova Gorica (UNG), Slovenia 0.01
National United University, Taiwan 0.01
Institute of High Energy Physics (IHEP), CAS, China 0.01
Division V - Physics and Mathematics, KIT, Germany 0.01
Yamagata University, Japan 0.01
Stefan Meyer Institute for Subatomic Physics (SMI), ÖAW, Austria 0.01
Institute for High Energy Physics (HEPHY), ÖAW, Austria 0.01
University of the Basque Country (UPV/EHU), Spain 0.01
Swiss Federal Institute of Technology Lausanne (EPFL), Switzerland 0.01
University of Pittsburgh (Pitt), United States of America (USA) 0.01
University of Bonn (Uni Bonn), Germany 0.01
Luther College, United States of America (USA) 0.01
Beihang University (BUAA), China 0.01
The Nippon Dental University, Japan 0.01
Toho University, Japan 0.01
Soongsil University, South Korea 0.01
Indian Institute of Technology Bhubaneswar (IIT-BBS), India 0.01
Gyeongsang National University (GNU), South Korea 0.01
University of Ljubljana, Slovenia 0.01
Korea Institute of Science and Technology Information (KISTI), South Korea 0.01
National Central University (NCU), Taiwan 0.01
Chonnam National University, South Korea 0.01
University of Maribor, Slovenia 0.01
Indian Institute of Science Education and Research Mohali (IISER Mohali), India 0.01
Giessen University (JLU), Germany 0.01
The University of Sydney (USYD), Australia 0.01
University of Miyazaki, Japan 0.01
Indian Institute of Technology Guwahati (IIT Guwahati), India 0.01
Aligarh Muslim University (AMU), India 0
INFN Section in Torino, Italy 0
University of Turin (UNITO), Italy 0
King Abdulaziz City for Science and Technology (KACST), Saudi Arabia 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