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- Title
The differential production cross section of the $$\phi $$ (1020) meson in $$\sqrt{s}$$ = 7 TeV $$pp$$ collisions measured with the ATLAS detector.
- Abstract
A measurement is presented of the $$\phi \times \mathcal {BR}(\phi \rightarrow K^{+}K^{-})$$ production cross section at $$\sqrt{s}$$ = 7 TeV using $$pp$$ collision data corresponding to an integrated luminosity of 383 $$\mathrm {\upmu b^{-1}}$$ , collected with the ATLAS experiment at the LHC. Selection of $$\phi $$ (1020) mesons is based on the identification of charged kaons by their energy loss in the pixel detector. The differential cross section is measured as a function of the transverse momentum, $$p_{\mathrm {T,\phi }}$$ , and rapidity, $$y_{\phi }$$ , of the $$\phi $$ (1020) meson in the fiducial region 500 $$<p_{\mathrm {T,\phi }}<$$ 1200 MeV, $$|y_{\phi }|<$$ 0.8, kaon $$p_{\mathrm {T},K}>$$ 230 MeV and kaon momentum $$p_{K}<$$ 800 MeV. The integrated $$\phi (1020)$$ -meson production cross section in this fiducial range is measured to be $$\sigma _{\phi } \times \mathcal {BR}(\phi \rightarrow K^{+}K^{-}) $$ = 570 $$\pm $$ 8 (stat) $$\pm $$ 66 (syst) $$\pm $$ 20 (lumi) $$\mathrm {\upmu b}$$ .
- Subjects
PHI mesons; DIFFERENTIAL cross sections; DETECTORS; COLLISIONS (Physics); ENERGY dissipation; LUMINOSITY; ATLAS (Computer program language)
- Publication
European Physical Journal C -- Particles & Fields, 2014, Vol 74, Issue 7, p1
- ISSN
1434-6044
- Publication type
Article
- DOI
10.1140/epjc/s10052-014-2895-2