Measurement of the B0 production cross section in pp Collisions at sqrt(s) = 7 TeV

TL;DR

This paper reports the measurement of B0 meson production cross sections in proton-proton collisions at 7 TeV using CMS data, providing key insights into heavy flavor production at the LHC.

Contribution

It presents the first measurement of B0 production cross sections at 7 TeV in a specific kinematic range using exclusive decay channels.

Findings

Total cross section for B0 with pt > 5 GeV and y < 2.2 is 33.2 microbarns.

Differential cross sections in transverse momentum and rapidity are provided.

Results agree with theoretical predictions within uncertainties.

Abstract

Measurements of the differential production cross sections in transverse momentum and rapidity for B0 mesons produced in pp collisions at sqrt(s) = 7 TeV are presented. The dataset used was collected by the CMS experiment at the LHC and corresponds to an integrated luminosity of 40 inverse picobarns. The production cross section is measured from B0 meson decays reconstructed in the exclusive final state J/Psi K-short, with the subsequent decays J/Psi to mu^+ mu^- and K-short to pi^+ pi^-. The total cross section for pt(B0) > 5 GeV and y(B0) < 2.2 is measured to be 33.2 +/- 2.5 +/- 3.5 microbarns, where the first uncertainty is statistical and the second is systematic.