Measurement of vector boson plus $D^{*}(2010)^+$ meson production in $\bar{p}p$ collisions at $\sqrt{s}=1.96\, {\rm TeV}$

TL;DR

This paper measures the production rates of vector bosons with $D^{*}(2010)^+$ mesons in proton-antiproton collisions at 1.96 TeV, comparing results with Standard Model predictions and exploring production mechanisms.

Contribution

First measurement of vector boson plus $D^{*}(2010)^+$ meson production in proton-antiproton collisions at Tevatron energies, using a large data sample and differential analysis.

Findings

Measured cross section ratios $\sigma(W+D^{*})/\sigma(W)$ and $\sigma(Z+D^{*})/\sigma(Z)$.

Results agree with PYTHIA predictions, constraining non-standard-model contributions.

Performed differential measurement of $d\sigma/dp_T(D^{*})$.

Abstract

A measurement of vector boson ($V$) production in conjunction with a $D^{*}(2010)^+$ meson is presented. Using a data sample corresponding to $9.7\, {\rm fb}^{-1}$ of ^Mproton-antiproton collisions at center-of-mass energy $\sqrt{s}=1.96\rm~ TeV$ produced by the Fermilab Tevatron, we reconstruct $V+D^{*+}$ samples with the CDF~II detector. The $D^{*+}$ is fully reconstructed in the $D^{*}(2010)^+ \rightarrow D^{0}(\to K^-\pi^+)\pi^+$ decay mode. This technique is sensitive to the associated production of vector boson plus charm or bottom mesons. We measure the ratio of production cross sections $\sigma(W+D^{*})/\sigma(W)$ = $[1.75\pm 0.13 {\rm (stat)}\pm 0.09 {\rm (syst)}]\% $ and $\sigma(Z+D^{*})/\sigma(Z)$ = $[1.5\pm 0.4 {\rm (stat)} \pm 0.2 {\rm (syst)}]\% $ and perform a differential measurement of $d\sigma(W+D^{*})/dp_T(D^{*})$. Event properties are utilized to determine the fraction of $V+D^{*}(2010)^+$ events originating from different production processes. The results are in agreement with the predictions obtained with the {\sc pythia} program, limiting possible contribution from non-standard-model physics processes.