6533b838fe1ef96bd12a4f1f
RESEARCH PRODUCT
Dipole amplitude with uncertainty estimate from HERA data and applications in Color Glass Condensate phenomenology
Tuomas LappiTuomas LappiHeikki Mäntysaarisubject
Nuclear physicsPhysicsDipoleAmplitudeNuclear TheoryInitial value problemHERANuclear ExperimentDeep inelastic scatteringPhenomenology (particle physics)Color-glass condensateGluondescription
We determine the initial condition for the small-x evolution equation (BK) from the HERA deep inelastic scattering data using a new parametrization that also keeps the unintegrated gluon distribution positive. The obtained dipole amplitude and its uncertainty estimate can be used to compute single inclusive particle production in proton-proton and proton-nucleus collisions. We argue that one has to use consistently the proton transverse area measured in DIS and the total inelastic cross section when calculating the single inclusive cross section. This leads to a midrapidity nuclear modification factor RpA that approaches unity at large transverse momentum, independently of the center-of-mass energy.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2014-09-25 | Proceedings of XXII. International Workshop on Deep-Inelastic Scattering and Related Subjects — PoS(DIS2014) |