@article{ddfd941cc89949ad9174fe09b7a5a0ad,

title = "First branching fraction measurement of the suppressed decay Ξc0 →π- Λc+",

abstract = "The Ξc0 baryon is unstable and usually decays into charmless final states by the c→sud¯ transition. It can, however, also disintegrate into a π- meson and a Λc+ baryon via s quark decay or via cs→dc weak scattering. The interplay between the latter two processes governs the size of the branching fraction B(Ξc0→π-Λc+), first measured here to be (0.55±0.02±0.18)%, where the first uncertainty is statistical and second systematic. This result is compatible with the larger of the theoretical predictions that connect models of hyperon decays using partially conserved axial currents and SU(3) symmetry with those involving the heavy-quark expansion and heavy-quark symmetry. In addition, the branching fraction of the normalization channel, B(Ξc+→pK-π+)=(1.135±0.002±0.387)% is measured.",

author = "{LHCb Collaboration} and R. Aaij and Beteta, {C. Abell{\'a}n} and T. Ackernley and B. Adeva and M. Adinolfi and H. Afsharnia and Aidala, {C. A.} and S. Aiola and Z. Ajaltouni and S. Akar and J. Albrecht and F. Alessio and M. Alexander and Albero, {A. Alfonso} and Z. Aliouche and G. Alkhazov and Cartelle, {P. Alvarez} and S. Amato and Y. Amhis and L. An and L. Anderlini and G. Andreassi and A. Andreianov and M. Andreotti and F. Archilli and A. Artamonov and M. Artuso and K. Arzymatov and E. Aslanides and M. Atzeni and B. Audurier and S. Bachmann and M. Bachmayer and Back, {J. J.} and S. Baker and Rodriguez, {P. Baladron} and V. Balagura and W. Baldini and Leite, {J. Baptista} and Barlow, {R. J.} and S. Barsuk and W. Barter and M. Bartolini and F. Baryshnikov and Basels, {J. M.} and G. Bassi and V. Batozskaya and B. Batsukh and A. Battig and E. Bertholet",

note = "Publisher Copyright: {\textcopyright} 2020 CERN.",

year = "2020",

month = oct,

doi = "10.1103/PhysRevD.102.071101",

language = "אנגלית",

volume = "102",

journal = "Physical Review D",

issn = "2470-0010",

publisher = "American Physical Society",

number = "7",

}