Permanent URL to this publication: http://dx.doi.org/10.5167/uzh-23837
Aaron, F D; Alexa, C; Andreev, V; Antunovic, B; Aplin, S; Müller, K; Nowak, K; Robmann, P; Schmitz, C; Schöning, A; Straumann, U; Truöl, P; H1 Collaboration, (2009). Measurement of diffractive scattering of photons with large momentum transfer at HERA. Physics Letters B, 672(3):219-226.
The first measurement of diffractive scattering of quasi-real photons with large momentum transfer γp→γY, where Y is the proton dissociative system, is made using the H1 detector at HERA. The measurement is performed for initial photon virtualities Q2<0.01 GeV2. Single differential cross sections are measured as a function of W, the incident photon–proton centre of mass energy, and t, the square of the four-momentum transferred at the proton vertex, in the range 175<W<247 GeV and 4<|t|<36 GeV2. The W dependence is well described by a model based on perturbative QCD using a leading logarithmic approximation of the BFKL evolution. The measured |t| dependence is harder than that predicted by the model and those observed in exclusive vector meson production.
|Item Type:||Journal Article, refereed, original work|
|Communities & Collections:||07 Faculty of Science > Physics Institute|
|Date:||23 February 2009|
|Deposited On:||25 Nov 2009 17:05|
|Last Modified:||23 Nov 2012 16:21|
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