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As an example, we show how, if <jats:italic>Z<\/jats:italic> = 1, the cross-correlation can exclude a 39% fraction of Fe56 nuclei at 2<jats:italic>\u03c3<\/jats:italic> for rays above 100 EeV.<\/jats:p>","DOI":"10.1088\/1475-7516\/2022\/12\/003","type":"journal-article","created":{"date-parts":[[2022,12,2]],"date-time":"2022-12-02T16:06:45Z","timestamp":1669997205000},"page":"003","update-policy":"https:\/\/doi.org\/10.1088\/crossmark-policy","source":"Crossref","is-referenced-by-count":3,"title":["Constraining ultra-high-energy cosmic ray composition through cross-correlations"],"prefix":"10.1088","volume":"2022","author":[{"given":"Konstantinos","family":"Tanidis","sequence":"first","affiliation":[]},{"given":"Federico R.","family":"Urban","sequence":"additional","affiliation":[]},{"given":"Stefano","family":"Camera","sequence":"additional","affiliation":[]}],"member":"266","published-online":{"date-parts":[[2022,12,2]]},"reference":[{"key":"bc7ee4a3cc5a4a721a9f6cb662c69a445","doi-asserted-by":"publisher","first-page":"485","DOI":"10.1103\/PhysRevLett.6.485","article-title":"Extremely energetic cosmic-ray event","volume":"6","author":"Linsley","year":"1961","journal-title":"Phys. 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