How Bright is the Proton? A Precise Determination of the Photon Parton Distribution Function.

@article{Manohar2016HowBI,
  title={How Bright is the Proton? A Precise Determination of the Photon Parton Distribution Function.},
  author={Aneesh V. Manohar and Paolo Nason and Gavin P. Salam and Giulia Zanderighi},
  journal={Physical review letters},
  year={2016},
  volume={117 24},
  pages={
          242002
        }
}
It has become apparent in recent years that it is important, notably for a range of physics studies at the Large Hadron Collider, to have accurate knowledge on the distribution of photons in the proton. We show how the photon parton distribution function (PDF) can be determined in a model-independent manner, using electron-proton (ep) scattering data, in effect viewing the ep→e+X process as an electron scattering off the photon field of the proton. To this end, we consider an imaginary, beyond… 

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References

SHOWING 1-10 OF 53 REFERENCES

The ZEUS Collaboration

Collective behaviour of final-state hadrons, and multiparton interactions are studied in high-multiplicity ep scattering at a centre-of-mass energy √ s = 318GeV with the ZEUS detector at HERA. Twoand

Search for resonances decaying to photon pairs in 3.2 fb−1 of pp collisions at s=13 TeV with the ATLAS detector.

This proceedings summarises the search for resonances decaying into two photons with a mass greater than 200 GeV. Models, which have scalars, such as the extended Higgs sector are used to optimise

Search for new physics in high mass diphoton events in proton-proton collisions at s = 13 TeV

  • Physics
  • 2015
We report on a search for new physics using high mass diphoton events. The search employs 2.6 fb−1 of pp collision data collected by the CMS experiment in 2015 at a center-of-mass energy of 13 TeV

FOR THE CLAS COLLABORATION

in 24th International Workshop on Deep-Inelastic Scattering and Related Subjects (DIS 2016) Hamburg

  • Germany, April 11-15, 2016
  • 2016

29

I and J

Eur

  • Phys. J. C75, 132
  • 2015

Comput

  • Phys. Commun. 70, 97
  • 1992
...