Direct photon production at LHCb

C. J. G. Onderwater; LHCb Collaboration; Thomas Boettcher

doi:10.1016/j.nuclphysa.2018.10.046

Direct photon production at LHCb

C. J. G. Onderwater, LHCb Collaboration, Thomas Boettcher

Precision Frontier

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Abstract

At small Bjorken-x, the large gluon number density in the nucleon leads to gluon recombination competing with gluon splitting, which could result in saturation of the gluon PDF. This gluon saturation has yet to be conclusively observed. Direct photon production provides sensitivity to gluon densities in protons and nuclei, and the forward acceptance of LHCb detector allows for measurements of this process at low Bjorken-x, providing an ideal probe of saturation effects. Progress towards the measurement of forward direct photon production using the LHCb detector is presented.

Original language	English
Pages (from-to)	251-254
Number of pages	4
Journal	Nuclear Physics A
Volume	982
DOIs	https://doi.org/10.1016/j.nuclphysa.2018.10.046
Publication status	Published - Feb-2019

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@article{e778e97781c64ca1a95e2488532d005b,

title = "Direct photon production at LHCb",

abstract = "At small Bjorken-x, the large gluon number density in the nucleon leads to gluon recombination competing with gluon splitting, which could result in saturation of the gluon PDF. This gluon saturation has yet to be conclusively observed. Direct photon production provides sensitivity to gluon densities in protons and nuclei, and the forward acceptance of LHCb detector allows for measurements of this process at low Bjorken-x, providing an ideal probe of saturation effects. Progress towards the measurement of forward direct photon production using the LHCb detector is presented.",

author = "R. Aaij and B. Adeva and M. Adinolfi and Z. Ajaltouni and S. Akar and J. Albrecht and F. Alessio and L. Dufour and M Mulder and Onderwater, {C. J. G.} and A. Pellegrino and S. Tolk and {van Veghel}, M. and {LHCb Collaboration} and Thomas Boettcher",

year = "2019",

month = feb,

doi = "10.1016/j.nuclphysa.2018.10.046",

language = "English",

volume = "982",

pages = "251--254",

journal = "Nuclear Physics A",

issn = "0375-9474",

publisher = "ELSEVIER SCIENCE BV",

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TY - JOUR

T1 - Direct photon production at LHCb

AU - Aaij, R.

AU - Adeva, B.

AU - Adinolfi, M.

AU - Ajaltouni, Z.

AU - Akar, S.

AU - Albrecht, J.

AU - Alessio, F.

AU - Dufour, L.

AU - Mulder, M

AU - Onderwater, C. J. G.

AU - Pellegrino, A.

AU - Tolk, S.

AU - van Veghel, M.

AU - LHCb Collaboration

AU - Boettcher, Thomas

PY - 2019/2

Y1 - 2019/2

N2 - At small Bjorken-x, the large gluon number density in the nucleon leads to gluon recombination competing with gluon splitting, which could result in saturation of the gluon PDF. This gluon saturation has yet to be conclusively observed. Direct photon production provides sensitivity to gluon densities in protons and nuclei, and the forward acceptance of LHCb detector allows for measurements of this process at low Bjorken-x, providing an ideal probe of saturation effects. Progress towards the measurement of forward direct photon production using the LHCb detector is presented.

AB - At small Bjorken-x, the large gluon number density in the nucleon leads to gluon recombination competing with gluon splitting, which could result in saturation of the gluon PDF. This gluon saturation has yet to be conclusively observed. Direct photon production provides sensitivity to gluon densities in protons and nuclei, and the forward acceptance of LHCb detector allows for measurements of this process at low Bjorken-x, providing an ideal probe of saturation effects. Progress towards the measurement of forward direct photon production using the LHCb detector is presented.

U2 - 10.1016/j.nuclphysa.2018.10.046

DO - 10.1016/j.nuclphysa.2018.10.046

M3 - Article

SN - 0375-9474

VL - 982

SP - 251

EP - 254

JO - Nuclear Physics A

JF - Nuclear Physics A

ER -