LOS ANGELES — Screenwriters waited Monday to learn what their five-month strike won and prepared for a possible return to work after their union reached an agreement with studio executives that could help end the walkouts that brought Hollywood to a standstill.

       The historic shutdown will go on for now, with actors remaining on strike and no talks planned, though the tentative deal announced Sunday night may provide momentum that could lead to a resolution for them too. That would allow full production to resume for the first time since May.

       The governing boards of the two branches of the Writers Guild of America are likely to vote on the contract Tuesday. With their approval, writers will then vote on the deal, and the strike can officially end. Network shows including NBC’s “The Tonight Show Starring Jimmy Fallon” and ABC’s “Jimmy Kimmel Live!” could return to the air within days.