link between a website’s accessibility and an increase in user experience

I'm trying to find a scholarly article which demonstrates a link between a website's accessibility and an increase in user experience.

Google only returns 1 result for +accessibility +website +"user experience", which is a LinkedIn profile.

Google Scholar returns more results, but without making a clear link between an accessible website and user experience. I read all of the first four results, the rest look not relevant.

The W3.org website, has something interesting to say, but without citing a scholarly article, which is what I need to be able to reference.

Accessibility also benefits people without disabilities. The Web Accessibility Perspectives video shows examples of how accessibility is essential for people with disabilities and useful for everyone in a variety of situations.

There is also a strong business case for accessibility. Accessibility overlaps with other best practices such as mobile web design, device independence, multi-modal interaction, usability, design for older users, and search engine optimization (SEO). Case studies show that accessible websites have better search results, reduced maintenance costs, and increased audience reach, among other benefits. Developing a Web Accessibility Business Case for Your Organization details the benefits of web accessibility.

Am I barking up the wrong tree? Is there no link between a website's accessibility and an increase in user experience?