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Ashutosh K. Alok and Subhashish Banerjee’s work receives international recognition
The measurement of sin(2beta) is the first signal for Charge-Parity (CP) violation outside the neutral K meson system. The precision measurement of its value is the corner stone in establishing the Cabibbo–Kobayashi–Maskawa (CKM) mechanism for CP violation. The success of CKM mechanism resulted in Nobel Prize for physics in 2008. Quantum coherence plays a crucial role in the determination of many such observables in neutral meson systems. But, any real system interacts with its environment and this interaction can lead to a loss of quantum coherence, that is, decoherence. The environmental effects may arise at a fundamental level, such as the fluctuations in quantum gravity space-time background.
With the inclusion of the decoherence effects which characterizes the effect of the background, they show that the measured values of important observables in B meson systems, such as sin(2beta), can get masked! They also suggest a number of methods which will enable clean determination of these observables along with the decoherence parameter quite easily at the LHCb or B-factories.
Ashutosh K. Alok and Subhashish Banerjee from Department of Physics at IIT Jodhpur along with S. Uma Sankar (IIT Bombay) are working on “Probing signatures of quantum gravity like background at LHCb and B-factories”. Thus, this work could open the doors for probing some very fundamental aspects of nature such as quantum gravity background by measuring observables in flavor physics which are mainly used to probe new physics models beyond Standard Model. Their work “Re-examining sin 2β and Δmd from evolution of B0d mesons with decoherence” has been published in Physics Letters B, a renowned journal in the field of particle physics. Also, the work was presented at the prestigious European Physical Society’s Conference on High Energy Physics, held at the University of Vienna, Austria in July 2015.

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