Measurement of the B+ production cross section in p-pbar collisions at sqrt(s) = 1960 GeV

TL;DR

This paper reports a precise measurement of the B+ meson production cross section in proton-antiproton collisions at 1960 GeV, using the CDF II detector, providing valuable data for testing quantum chromodynamics predictions.

Contribution

It presents the first detailed differential cross section measurement of B+ mesons at this energy with improved accuracy and methodology.

Findings

Measured B+ production cross section as 2.78 ± 0.24 μb for pT ≥ 6 GeV/c

Used decay channel B+ → J/ψ K+ with J/ψ → μ+ μ− for reconstruction

Collected data corresponds to 739 pb−1 integrated luminosity

Abstract

We present a new measurement of the $B^+$ meson differential cross section $d\sigma/d p_T$ at $\sqrt{s}=1960$ GeV. The data correspond to an integrated luminosity of 739pb$^{-1}$ collected with the upgraded CDF detector (CDF II) at the Fermilab Tevatron collider. $B^+$ candidates are reconstructed through the decay $B^+ \to J/\psi K^+$, with $J/\psi \to \mu^+ \mu^-$. The integrated cross section for producing $B^+$ mesons with $p_T \geq 6$ GeV/c and $|y| \leq 1$ is measured to be $2.78 \pm 0.24 \mu$b