Updated reaction rate of 25Mg(p, & gamma;) 26Al and its astrophysical implication

26Al with a half-life of 7.17x105 years is one of the most significant nuclides in & gamma;-ray astronomy and presolar grains of meteorites. Its main production mechanism in the H-burning MgAl cycle is the 25Mg(p, & gamma;)26Al reaction. In the temperature region of 0.05-0.3 GK of astrophysical interest, the astrophysical 25Mg(p, & gamma;) 26Al reaction rate is dominated by the resonant capture of several low-energy resonances. In this work, we report the results of a complete experimental investigation of the Ec.m. = 92, 130, and 189 keV resonances in the 25Mg(p , & gamma;)26Al reaction with the Jinping Underground Nuclear Astrophysics Experimental Facility. The up-dated thermonuclear 25Mg(p, & gamma; ) 26Al reaction rate is (32-39)% higher than that obtained at the Laboratory for Underground Nuclear Astrophysics around 0.07-0.09 GK, mainly due to the 32% enhancement of the 92-keV resonance strength. The astrophysical impact of our new rate on the 26Al yield in a 5 Mo low-metallicity asymptotic giant branch star is investigated, in which an increase of (45-79)% in the 26Al yield is found by adopting our new 25Mg(p, & gamma; ) 26Al rates.