Download or read book Measurement of the In-medium [Phi]-meson Width in Proton-nucleus Collisions written by and published by . This book was released on 2010 with total page 4 pages. Available in PDF, EPUB and Kindle. Book excerpt: We measured the production of [Phi] mesons in the collisions of 2.83 GeV protons with C, Cu, Ag, and Au at forward angles via the [Phi] → K+K- decay using the COSY-ANKE magnetic spectrometer. The [Phi] meson production cross section follows a target mass dependence of A0.56±0.02 in the momentum region of 0.6-1.6 GeV/c. Moreover, the comparison of the data with model calculations suggests that the in-medium [Phi] width is about an order of magnitude larger than its free value.