Tariq Aziz in the TIFR lab with the Silicon Micro Strip Detector 
The Belle Collaboration, a large scale experiment running at Japan's KEK high-energy physics laboratory, tackles this by using 535 million B-meson/anti-B-meson pairs to measure asymmetries. Previous work suggested a difference in the decay of charged and neutral particles — an asymmetry in the decay rate of about +7% for charged B mesons and −10% for neutral B mesons.
The new study1 reduces uncertainty on the charged particle decay rate by a factor of 1.7, providing stronger evidence for a large deviation in direct violation between charged and neutral B meson decays.
Tariq Aziz from Mumbai's Tata Institute of Fundamental Research (TIFR) speaking on behalf of Indian scientists participating in the Belle Collaboration, says that most of the asymmetries in the decay rates fit the pattern envisaged in the standard model developed during early 70s. The anomaly in the standard pattern arises from charged B-meson decay rate asymmetry, in particular when compared to the neutral B-meson. This anomaly could be the smoking gun for new physics. The collaboration is collecting more data to sharpen the picture.
Scientists from TIFR and Panjab University, Chandigarh are participating in the research that involves members from 13 countries.
