Chiral shifts in heavy-light mesons

The mass shifts of the P-wave Ds and Bs mesons due to coupling to DK and BK channels are calculated in the coupling channel model without fitting parameters. The strong mass shifts down for 0+ and 1+′ states have been obtained, while 1+′′ and 2+ states remain almost in situ. The masses of 0+ and 1+′ states of Bs mesons have been predicted.