Measurement of exclusive π+π- and ρ meson photoproduction at HERA: H1 Collaboration

Exclusive photoproduction of ρ(770) mesons is studied using the H1 detector at the ep collider HERA. A sample of about 900,000 events is used to measure single- and double-differential cross sections for the reaction γp→ π+π-Y. Reactions where the proton stays intact (mY= mp) are statistically separated from those where the proton dissociates to a low-mass hadronic system (mp

Keywords:

• Physics
• Meson
• HERA
• Nuclear physics
• Hadron
• Collider
• Amplitude
• Pion
• Proton
• Invariant mass

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