COLLEGE PARK, Maryland, June 29 -- Physical Review D, a journal that says it covers particles, fields, gravitation and cosmology from the American Physical Society, published research articles on the following topics in its June 1, 2024, edition (Vol. 109, Issue 11).

Here are excerpts:

* * *

LETTERS:

* Search for a heavy neutral lepton that mixes predominantly with the tau neutrino

ARTICLES:

* New constraints on ultrah . . .

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