Measurement of central exclusive pi+pi- production in p-pbar collisions at sqrt(s) = 0.9 and 1.96 TeV at CDF

Abstract

We measure exclusive ${\pi }^{+}{\pi }^{-}$ production in proton-antiproton collisions at center-of-mass energies $\sqrt{s}$ = 0.9 and 1.96 TeV in the Collider Detector at Fermilab. We select events with two oppositely charged particles, assumed to be pions, with pseudorapidity $|\eta |<1.3$ and with no other particles detected in $|\eta |<5.9$. We require the ${\pi }^{+}{\pi }^{-}$ system to have rapidity $|y|<$ 1.0. The production mechanism of these events is expected to be dominated by double pomeron exchange, which constrains the quantum numbers of the central state. The data are potentially valuable for isoscalar meson spectroscopy and for understanding the pomeron in a region of transition between nonperturbative and perturbative quantum chromodynamics. The data extend up to dipion mass $M({\pi }^{+}{\pi }^{-})$ = 5000 MeV/$c^2$ and show resonance structures attributed to $f_0$ and $f_2(1270)$ mesons. From the ${\pi }^{+}{\pi }^{-}$ and $K^{+}{K}^{-}$ spectra, we place upper limits on exclusive ${\chi }_{c0}(3415)$ production.

arXiv comment7 pages, 4 figures, Minor modifications to the text based on the feedback from the journal referee

References in corpus (10)

• Central Exclusive Particle Production at High Energy Hadron Colliders
• Observation of exclusive charmonium production and gamma+gamma to mu+mu- in p+pbar collisions at sqrt{s} = 1.96 TeV
• Is f0(1710) a glueball?
• Central exclusive chi_c meson production at the Tevatron revisited
• Central exclusive production of scalar χ_c meson at the Tevatron, RHIC and LHC energies
• Modeling exclusive meson pair production at hadron colliders
• Central exclusive meson pair production in the perturbative regime at hadron colliders
• Observation of Exclusive Gamma Gamma Production in p pbar Collisions at sqrt{s}=1.96 TeV
• Exclusive production of meson pairs and resonances in proton-proton collisions
• Exclusive production of χ_{c}(0^{+}) meson and its measurement in the π^{+}π^{-} channel

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