First measurement of prompt and non-prompt D⁎+ vector meson spin alignment in pp collisions at s=13 TeV

Summary, in English

This letter reports the first measurement of spin alignment, with respect to the helicity axis, for D⁎+ vector mesons and their charge conjugates from charm-quark hadronisation (prompt) and from beauty-meson decays (non-prompt) in hadron collisions. The measurements were performed at midrapidity (|y|

• Author: S. Acharya; S. Basu; P. Christiansen; O. Matonoha; A.F. Nassirpour; A. Ohlson; D. Silvermyr; J. Staa; O. Vazquez Rueda; V. Vislavicius; N. Zurlo
• Department/s: Particle and nuclear physics
• Publishing year: 2023
• Language: English
• Publication/Series: Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
• Volume: 846
• Links: http://dx.doi.org/10.1016/j.physletb.2023.137920
• Document type: Journal article
• Publisher: Elsevier
• Topic: Subatomic Physics
• Status: Published
• ISBN/ISSN/Other: ISSN: 0370-2693