There are dubious results published in every subject, including math and physics (whether theoretical or experimental). The difference is that such results are less likely to be widely cited and accepted by the field. For math and theoretical physics, the reader can (assuming sufficient knowledge and skill) verify the result themselves, so if your proof is incorrect or not rigorous enough, you won't get cited. For experimental physics, it is more common for different teams to reproduce a result, or verify a result using a different method, so papers aren't usually widely cited unless they have been independently verified. Part of that is cultural, part of that is attempting to reproduce results is relatively straightforward compared to say experiments involving human subjects, and part if is because results are usually quantitative, so "we did the same thing as paper X, but with more precision" is still interesting enough to be published.