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We investigate the observational constraints on three typical brane inflationmodels by considering the latest local measurement of the Hubble constant inthe global fit. We also employ other observational data, including the Planck2015 CMB data, the BICEP2/Keck Array B-mode data, and the baryon acousticoscillations data, in our analysis. Previous studies have shown that theaddition of the latest local $H_{0}$ measurement favors a larger spectralindex, and can exert a significant influence on the model selection ofinflation. In this work, we investigate its impacts on the status of braneinflation models. We find that, when the direct $H_{0}$ measurement isconsidered, the prototype model of brane inflation is still in good agreementwith the current observational data within the $2\sigma$ level range. For theKKLMMT model, the consideration of the $H_{0}$ measurement allows the range ofthe parameter $\beta$ to be amplified to ${\cal O}(10^{-2})$, which slightlyalleviates the fine-tuning problem. For the IR DBI model, the addition of the$H_{0}$ measurement does not provide a better fit. These results show that theconsideration of the new $H_{0}$ prior can exert a considerable influence onthe brane inflation models. At last, we show that, when $\beta \lesssim 1.1$,the equilateral non-Gaussianity in the IR DBI inflation model is compatiblewith the current CMB data at the 1$\sigma$ level.

Constraints on brane inflation after Planck 2015: Impacts of the latest local measurement of the Hubble constant