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Measurement of D+ and Lambda(+)(c) production in deep inelastic scattering at HERA
Journal article   Open access   Peer reviewed

Measurement of D+ and Lambda(+)(c) production in deep inelastic scattering at HERA

H. Abramowicz, I. Abt, L. Adamczyk, M. Adamus, R. Aggarwal, S. Antonelli, P. Antonioli, A. Antonov, M. Arneodo, V. Aushev, …
The journal of high energy physics, Vol.2010(11), 9
11/01/2010
DOI: 10.1007/JHEP11(2010)009
url
https://doi.org/10.1007/JHEP11(2010)009View
Published (Version of record) Open Access

Abstract

Charm production in deep inelastic scattering has been measured with the ZEUS detector at HERA using an integrated luminosity of 120 pb(-1). The hadronic decay channels D+ -> K-S(0)pi(+), Lambda(+)(c) -> pK(S)(0) and Lambda(+)(c) -> Lambda pi(+), and their charge conjugates, were reconstructed. The presence of a neutral strange hadron in the final state reduces the combinatorial background and extends the measured sensitivity into the low transverse momentum region. The kinematic range is 0 < p(T) ( D+, Lambda(+)(c)) < 10GeV, vertical bar eta( D+,Lambda(+)(c))vertical bar < 1.6, 1.5 < Q(2) < 1000GeV(2) and 0.02 < y < 0.7. Inclusive and differential cross sections for the production of D+ mesons are compared to next-to-leading-order QCD predictions. The fraction of c quarks hadronising into Lambda(+)(c) baryons is extracted.
Physical Sciences Physics Physics, Particles & Fields Science & Technology

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