Measurement of the Bottom contribution to non-photonic electron production in $p+p$ collisions at $\sqrt{s} $=200 GeV

TL;DR

This paper measures the contribution of B meson decays to non-photonic electrons in proton-proton collisions at 200 GeV, finding about 50% contribution at high transverse momentum, which informs understanding of heavy flavor production and suppression.

Contribution

It provides the first direct measurement of B meson decay contribution to non-photonic electrons at this energy using azimuthal correlations, offering new constraints on heavy flavor production models.

Findings

B decay contribution is approximately 50% at pT ≥ 5 GeV/c

Results constrain the nuclear modification factor for B and D meson decay electrons

Indicates B meson production is suppressed in heavy ion collisions at high pT

Abstract

The contribution of $B$ meson decays to non-photonic electrons, which are mainly produced by the semi-leptonic decays of heavy flavor mesons, in $p+p$ collisions at $\sqrt{s} =$ 200 GeV has been measured using azimuthal correlations between non-photonic electrons and hadrons. The extracted $B$ decay contribution is approximately 50% at a transverse momentum of $p_{T} \geq 5$ GeV/$c$. These measurements constrain the nuclear modification factor for electrons from $B$ and $D$ meson decays. The result indicates that $B$ meson production in heavy ion collisions is also suppressed at high $p_{T}$.