2021 Impact factor 4.991
Particles and Fields
Eur. Phys. J. C 4, 463-496
DOI 10.1007/s100529800904

Parton distributions: a new global analysis

A.D. Martin1 - R.G. Roberts2 - W.J. Stirling1,3 - R.S. Thorne4

1 Department of Physics, University of Durham, Durham, DH1 3LE
2 Rutherford Appleton Laboratory, Chilton, Didcot, Oxon, OX11 0QX
3 Department of Mathematical Sciences, University of Durham, Durham, DH1 3LE
4 Jesus College, University of Oxford, Oxford, OX1 3DW

Received: 23 March 1998 / Published online: 23 June 1998

We present a new analysis of parton distributions of the proton. This incorporates a wide range of new data, an improved treatment of heavy flavours and a re-examination of prompt photon production. The new set (MRST) shows systematic differences from previous sets of partons which can be identified with particular features of the new data and with improvements in the analysis. We also investigate the sensitivities of the results to (i) the uncertainty in the determination of the gluon at large x, (ii) the value of $\alpha_S (M_Z^2)$ and (iii) the minimum Q2 cut on the data that are included in the global fit.

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