Abstract
We report a sensitive study of measuring brightarrow sgamma photon polarisation in D^{0}rightarrow K_1(1270)^-e^+nu _e with an integrated luminosity of mathscr {L} = 1 ab^{-1} at a center-of-mass energy of 3.773 GeV at a future Super Tau Charm Facility. More than 61,000 signals of D^{0}rightarrow K_1(1270)^-e^+nu _e are expected. Based on a fast simulation software package, the statistical sensitivity for the ratio of up-down asymmetry is estimated to be 1.5times 10^{-2} by performing a two-dimensional angular analysis in D^{0}rightarrow K_1(1270)^-e^+nu _e. Combining with measurements of up-down asymmetry in Brightarrow K_1gamma , the photon polarisation in brightarrow sgamma can be determined model-independently.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
