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dc.contributor.authorAaltonen, Timo Antero
dc.contributor.authorCasal Laraña, Bruno
dc.contributor.authorCuevas Maestro, Francisco Javier
dc.contributor.authorGómez Gramuglio, Gervasio
dc.contributor.authorPalencia Cortezón, José Enrique
dc.contributor.authorRuiz Jimeno, Alberto 
dc.contributor.authorScodellaro, Luca
dc.contributor.authorVilar Cortabitarte, Rocío 
dc.contributor.authorVizán García, Jesús Manuel 
dc.contributor.otherUniversidad de Cantabriaes_ES
dc.identifier.otherFPA 2011-28694-C02-01
dc.description.abstractWe measure exclusive π+π− production in proton-antiproton collisions at center-of-mass energies √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 |η|<1.3 and with no other particles detected in |η|<5.9. We require the π+π− 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(π+π−)=5000  MeV/c2 and show resonance structures attributed to f0 and f2(1270) mesons. From the π+π− and K+K− spectra, we place upper limits on exclusive χc0(3415) production.es_ES
dc.description.sponsorship[…] the Ministerio de Ciencia e Innovación, and Programa Consolider-Ingenio 2010, Spain[…]es_ES
dc.format.extent8 p.es_ES
dc.publisherAmerican Physical Societyes_ES
dc.rightsAtribución 3.0 España*
dc.sourcePhys. Rev. D, Vol. 91, Num. 9, Pag. 091101(R) (2015)es_ES
dc.titleMeasurement of central exclusive π+π− production in p¯p collisions at √s=0.9 and 1.96 TeV at CDFes_ES

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Atribución 3.0 EspañaExcept where otherwise noted, this item's license is described as Atribución 3.0 España