# D$^{\star\pm}$ meson production in deep-inelastic diffractive interactions at HERA

Abstract : A measurement is presented of the cross section for D* meson production in diffractive deep-inelastic scattering for the first time at HERA. The cross section is given for the process ep -> eXY, where the system X contains at least one D* meson and is separated by a large rapidity gap from a low mass proton remnant system Y. The cross section is presented in the diffractive deep-inelastic region defined by 2 Q^2 100 GeV^2, 0.05 y 0.7, x_pom 0.04, M_Y 1.6 GeV and |t| 1 GeV^2. The D* mesons are restricted to the range ptD* 2 GeV and |\eta_D* | 1.5. The cross section is found to be 246+-54+-56 pb and forms about 6% of the corresponding inclusive D* cross section. The cross section is presented as a function of various kinematic variables, including z_pom^obs which is an estimate of the fraction of the momentum of the diffractive exchange carried by the parton entering the hard-subprocess. The data show a large component of the cross section at low z_pom^obs where the contribution of the Boson-Gluon-Fusion process is expected to dominate. The data are compared with several QCD--based calculations.
Document type :
Journal articles

Cited literature [12 references]

http://hal.in2p3.fr/in2p3-00011174
Contributor : Hélène Kerec <>
Submitted on : Friday, February 1, 2002 - 3:59:42 PM
Last modification on : Wednesday, April 7, 2021 - 3:26:01 PM
Long-term archiving on: : Tuesday, June 2, 2015 - 12:20:27 PM

### Identifiers

• HAL Id : in2p3-00011174, version 1

### Citation

C. Adloff, V. Andreev, B. Andrieu, T. Anthonis, V. Arkadov, et al.. D$^{\star\pm}$ meson production in deep-inelastic diffractive interactions at HERA. Physics Letters B, Elsevier, 2001, 520, pp.191-203. ⟨in2p3-00011174⟩

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