Belle is an experiment at the KEK B-factory. Its goal is to study the origin of CP violation.
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Belle II

"The Physics of B Factories" Book
jointly accomplished by Belle & BaBar !
European Physical Journal C, 74:3026 ( arXiv:1406.6311 )
[ KEK Press Release ( English , Japanese ) ]

Physics achievements from the Belle experiment
Prog. Theor. Exp. Phys. (PTEP) 2012, 04D001 ( arXiv:1212.5342)

New B → D*τν Measurement
Semileptonic-tag Measurement (Improved measurement)
[ Phys. Rev. Lett. 124, 161803 ( arXiv:1904.08794)
presented at Moriond EW 2019 ( slides )]

Review: a challenge to lepton universality in B-meson decays
[ Nature 546, 229 (2017.6.8) , (SharedIt link) ]

New B → K*l+l- Measurement
Search for lepton flavor universarity violation
[ arXiv:1904.02440,
presented at Moriond EW 2019 ( slides )]

Sookyung Choi, the Discoverer of X(3872),
Awarded 2017 Korean Ho-Am Science Prize
(2017.04.06)
Ho-Am Foundation site

Fumihiko Takasaki, the Founder of Belle,
Awarded Japan Academy Prize
(2017.03.13)
Japan Academy site (in English) / (in Japanese)


Integrated luminosity reached 1000 fb-1
[ KEK press release ( Japanese), interactions.org]

World Record Luminosity of 2.11 x 1034 cm-2 s-1
achieved (June 2009) with crab cavities at KEKB
[ KEK press release ( Japanese), interactions.org, CERN Courier]


[ Archive of past "Hot" items ]

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KEKB/Belle operation successfully ended on 30-June-2010.
KEKB/Belle Luminosity:
KEKB/Belle uninstallation:
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