Details

Autor(en) / Beteiligte

• Lansberg, J. P.
• Pire, B.
• Semenov-Tian-Shansky, K.
• Szymanowski, L.

Titel

Accessing baryon to meson transition distribution amplitudes in meson production in association with a high invariant mass lepton pair at GSI-FAIR with P ¯ ANDA

Ist Teil von

• Physical review. D, Particles, fields, gravitation, and cosmology, 2012-12, Vol.86 (11), Article 114033

Erscheinungsjahr

2012

Quelle

American Physical Society [PROLA]

Beschreibungen/Notizen

• Nucleon-antinucleon annihilation into a near backward- (or forward-) produced meson and a high invariant mass lepton pair admits a factorized description in terms of antinucleon (or nucleon) distribution amplitudes and nucleon-to-meson (or antinucleon-to-meson) transition distribution amplitudes. We estimate the cross section of backward (and forward) pion and [eta]-meson production in association with a high invariant mass lepton pair for the kinematical conditions of GSI-FAIR. The cross sections are found to be large enough to be measured with the P ANDA detector. Interesting phenomenological applications of the approach are thus expected.