Elsevier

Physics Letters B

Volume 379, Issues 1–4, 27 June 1996, Pages 319-329
Physics Letters B

Measurement of the Q2 dependence of the charged and neutral current cross sections in e±p scattering at HERA

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Abstract

The Q2 dependence and the total cross sections for charged and neutral current processes are measured in e±p reactions for transverse momenta of the outgoing lepton larger than 25 GeV. Comparable size of cross sections for the neutral current process and for the weak charged current process are observed above Q2 ∥ 5000 GeV2. Using the shape and magnitude of the charged current cross section we determine a propagator mass of mW = 84−7+10 GeV.

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    4

    Supported by the Bundesministerium für Bildung, Wissenschaft, Forschung und Technologie, FRG, under contract numbers 6AC17P, 6AC47P, 6DO571, 6HH17P, 6HH27I, 6HD17I, 6HD27I, 6KI17P, 6MP17I, and 6WT87P.

    5

    Supported by the UK Particle Physics and Astronomy Research Council, and formerly by the UK Science and Engineering Research Council.

    6

    Supported by FNRS-NFWO, IISN-IIKW.

    7

    Supported by the Polish State Committee for Scientific Research, grant nos. 115/E-743/SPUB/P03/109/95 and 2 P03B 244 08p01, and Stiftung für Deutsch-Polnische Zusammenarbeit, project no.506/92.

    8

    Supported in part by USDOE grant DE F603 91ER40674.

    9

    Supported by the Deutsche Forschungsgemeinschaft.

    10

    Supported by the Swedish Natural Science Research Council.

    11

    Supported by GA ČR, grant no. 202/93/2423, GA AV ČR, grant no. 19095 and GA UK, grant no. 342.

    12

    Supported by the Swiss National Science Foundation.

    1

    Visitor from Yerevan Phys. Inst., Armenia.

    3

    Deceased.

    2

    On leave from LBL, Berkeley, USA.

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