Coulomb Final State Interaction in Heavy Ion Collisions for Lévy Sources

• Main Authors: Máté Csanád, Sándor Lökös, Márton Nagy
• Format: Article
• Language: English
• Published: MDPI AG 2019-05-01
• Series: Universe
• Subjects: Femtoscopy; Bose–Einstein correlations; Coulomb correction; Heavy Ions
• Online Access: https://www.mdpi.com/2218-1997/5/6/133

Investigation of momentum space correlations of particles produced in high energy reactions requires taking final state interactions into account, a crucial point of any such analysis. Coulomb interaction between charged particles is the most important such effect. In small systems like those created in <inline-formula> <math display="inline"> <semantics> <mrow> <msup> <mi>e</mi> <mo>+</mo> </msup> <msup> <mi>e</mi> <mo>-</mo> </msup> <mo>-</mo> </mrow> </semantics> </math> </inline-formula> or <inline-formula> <math display="inline"> <semantics> <mrow> <mi>p</mi> <mo>+</mo> <mi>p</mi> </mrow> </semantics> </math> </inline-formula> collisions, the so-called Gamow factor (valid for a point-like particle source) gives an acceptable description of the Coulomb interaction. However, in larger systems such as central or mid-central heavy ion collisions, more involved approaches are needed. In this paper we investigate the Coulomb final state interaction for L&#233;vy-type source functions that were recently shown to be of much interest for a refined description of the space-time picture of particle production in heavy-ion collisions.