Measurement of branching fractions for Λc+ →n KS0 π+ and Λc+ →n KS0 K+

Based on 4.5 fb-1 of e+e- collision data accumulated at center-of-mass energies between 4599.53 and 4698.82 MeV with the BESIII detector, we measure the absolute branching fraction of the Cabibbo-favored decay Λc+→nKS0π+ with the precision improved by a factor of 2.8 and report the first evidence for the singly-Cabibbo-suppressed decay Λc+→nKS0K+. The branching fractions for Λc+→nKS0π+ and Λc+→nKS0K+ are determined to be (1.86±0.08±0.04)×10-2 and (3.9-1.4+1.7±0.3)×10-4, respectively, where the first uncertainties are statistical and the second ones are systematic. © 2024 authors. Published by the American Physical Society. Published by the American Physical Society under the terms of the "https://creativecommons.org/licenses/by/4.0/"Creative Commons Attribution 4.0 International license. Further distribution of this work must maintain attribution to the author(s) and the published article's title, journal citation, and DOI. Funded by SCOAP3.<els-accordion-group multiple="true" class="accordion-group hydrated" style="box-sizing: border-box; visibility: inherit; margin: 0px; padding: 0px; color: rgb(50, 50, 50); font-family: NexusSan, Arial, Georgia, sans-serif, serif; font-size: 16px;"><els-accordion-item id="topics-of-prominence" control-label="SciVal Topics" class="sc-els-accordion-item-h sc-els-accordion-item-s accordion hydrated" style="box-sizing: border-box; visibility: inherit; display: block; border-top: 0.0625rem solid rgb(46, 46, 46); margin: 0px; padding: 0px; border-bottom: 0.0625rem solid rgb(46, 46, 46);"></els-accordion-item></els-accordion-group>