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
Korea University, South Korea 0.02
School of Physics, 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
Graduate School / School of Science, Nagoya University, Japan 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
Faculty of Mathematics and Physics (FMP), CU, Czech Republic 0.02
Ludwig Maximilians University of Munich (LMU), Germany 0.02
Department of Physics, 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
Department of Physics, Tohoku University, Japan 0.01
Kanagawa University, Japan 0.01
TUM Department of Physics, 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
University of Hawai'i at Manoa (UH Mānoa), United States of America (USA) 0.01
The Henryk Niewodniczanski Institute of Nuclear Physics (IFJ PAN), PAS, Poland 0.01
Max Planck Institute for Physics (MPP), Germany 0.01
Sungkyunkwan University (SKKU), South Korea 0.01
Department of Physics, UT, Saudi Arabia 0.01
Tokyo Metropolitan University (TMU), Japan 0.01
University of Nova Gorica (UNG), Slovenia 0.01
Department of Physics, UTokyo, Japan 0.01
Beihang University (BUAA), China 0.01
Institute of Experimental Nuclear Physics (IEKP), KIT, Germany 0.01
Yamagata University, Japan 0.01
National United University, Taiwan 0.01
Institute for High Energy Physics (HEPHY), ÖAW, Austria 0.01
Stefan Meyer Institute for Subatomic Physics (SMI), 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
Institute of High Energy Physics (IHEP), CAS, China 0.01
Toho University, Japan 0.01
The Nippon Dental 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
Faculty of Mathematics and Physics (FMF), University of Ljubljana, Slovenia 0.01
Korea Institute of Science and Technology Information (KISTI), South Korea 0.01
Indian Institute of Technology Guwahati (IIT Guwahati), India 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
School of Physics, USYD, Australia 0.01
Earthquake Research Institute (ERI), UTokyo, Japan 0.01
University of Miyazaki, Japan 0.01
King Abdulaziz City for Science and Technology (KACST), Saudi Arabia 0
INFN Section in Torino, Italy 0
University of Turin (UNITO), Italy 0
Department of Physics, KAU, Saudi Arabia 0
Kobayashi-Maskawa Institute for the Origin of Particles and the Universe (KMI), Nagoya University, Japan 0
Aligarh Muslim University (AMU), India 0
Showa Pharmaceutical University, Japan 0
Theory Center, KEK, Japan 0
RIKEN Nishina Center for Accelerator-Based Science (RNC), Japan 0