# Measurement of the production cross section of a W boson in association with two b jets in pp collisions at $\sqrt{s} = 8{\,\mathrm{{TeV}}}$

The European Physical Journal C, Feb 2017

The production cross section of a W boson in association with two b jets is measured using a sample of proton–proton collisions at $\sqrt{s} = 8{\,\mathrm{{TeV}}}$ collected by the CMS experiment at the CERN LHC. The data sample corresponds to an integrated luminosity of 19.8$\,\text {fb}^\text {-1}$. The W bosons are reconstructed via their leptonic decays, $\mathrm {W}\rightarrow \ell \nu$, where $\ell =\mu$ or $\mathrm {e}$. The fiducial region studied contains exactly one lepton with transverse momentum $p_{\mathrm {T}} ^{\ell }>30\,\mathrm{{GeV}}$ and pseudorapidity $|\eta ^{\ell } |<2.1$, with exactly two b jets with $p_{\mathrm {T}} >25\,\mathrm{{GeV}}$ and $|\eta |<2.4$ and no other jets with $p_{\mathrm {T}} >25\,\mathrm{{GeV}}$ and $|\eta |<4.7$. The cross section is measured to be $\sigma ( {{\mathrm {p}\mathrm {p}}} \rightarrow {\mathrm {W}} (\ell \nu )$+${\mathrm{{b}}\mathrm{{\overline{b}}}})= 0.64 \pm 0.03{\,\mathrm{{(stat)}}} \pm 0.10{\,\mathrm{{(syst)}}} \pm 0.06{\,\mathrm{{(theo)}}} \pm 0.02{\,\mathrm{{(lumi)}}}\,{\text {pb}}$, in agreement with standard model predictions.

This is a preview of a remote PDF: https://link.springer.com/content/pdf/10.1140%2Fepjc%2Fs10052-016-4573-z.pdf

V. Khachatryan, A. M. Sirunyan, A. Tumasyan, W. Adam. Measurement of the production cross section of a W boson in association with two b jets in pp collisions at $\sqrt{s} = 8{\,\mathrm{{TeV}}}$, The European Physical Journal C, 2017, 92, DOI: 10.1140/epjc/s10052-016-4573-z