Title of article
Production of φ-mesons in p+p, p+Pb and central Pb+Pb collisions at Ebeam=158 A GeV
Author/Authors
NA49 Collaboration، نويسنده , , S.V. Afanasiev، نويسنده , , T. Anticic، نويسنده , , J. Bachler، نويسنده , , D. Barna، نويسنده , , L.S. Barnby، نويسنده , , J. Bartke، نويسنده , , R.A. Barton، نويسنده , , L. Betev، نويسنده , , H. Bia?kowska، نويسنده , , A. Billmeier، نويسنده , , C. Blume، نويسنده , , C.O. Blyth، نويسنده , , B. Boimska، نويسنده , , J. Bracinik، نويسنده , , F.P. Brady، نويسنده , , R. Brun، نويسنده , , P. Bun?i?، نويسنده , , L. Carr، نويسنده , , D. Cebra، نويسنده , , et al.، نويسنده ,
Issue Information
روزنامه با شماره پیاپی سال 2000
Pages
8
From page
59
To page
66
Abstract
Yields and phase space distributions of φ-mesons emitted from p+p (minimum bias trigger), p+Pb (at various centralities) and central Pb+Pb collisions are reported (Ebeam=158 A GeV). The decay φ→K+K− was used for identification. The φ/π ratio is found to increase by a factor of 3.0±0.7 from inelastic p+p to central Pb+Pb. Significant enhancement in this ratio is also observed in subclasses of p+p events (characterized by high charged-particle multiplicity) as well as in the forward hemisphere of central p+Pb collisions. In Pb+Pb no shift or significant broadening of the φ-peak is seen.
Journal title
PHYSICS LETTERS B
Serial Year
2000
Journal title
PHYSICS LETTERS B
Record number
913432
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