Production of Lambda, Cascade and Omega Hyperons in ppbar Collisions at1.96 TeV Center of Mass Energy

TL;DR

This paper measures the production rates of lambda, cascade, and omega hyperons in proton-antiproton collisions at 1.96 TeV, revealing potential universal behavior in particle production at high transverse momentum.

Contribution

It provides the first detailed measurements of hyperon production cross sections at Tevatron energies, highlighting similarities with meson production patterns.

Findings

Hyperon cross sections decrease with increasing transverse momentum.

Similar slopes observed for hyperons and mesons at high transverse momentum.

Potential universality in particle production mechanisms suggested.

Abstract

We report a set of measurements of inclusive invariant transverse momentum differential cross sections of lambda, cascade and omega hyperons reconstructed in the central region with pseudorapidity within 1 and transverse momentum up to 10 GeV/c Events are collected with a minimum-bias trigger in ppbar collisions at a center-of-mass energy of 1.96 TeV using the CDF II detector at the Tevatron Collider. As transverse momentum increases, the slopes of the differential cross sections are similar not only to each other but also to those of mesons, which could indicate a universality of the particle production in transverse momentum The invariant differential cross sections are also presented for different charged-particle multiplicity intervals.