arXiv subjects

S. C. Lang

Publications and source records attributed to S. C. Lang.

3 recordsLinked to original sources

arXiv1997

Single particle spectra in deep inelastic scattering as a probe of small $x$ dynamics

We study the transverse momentum ($p_T$) spectrum of charged particles produced in deep inelastic scattering (DIS) at small Bjorken $x$ in the central region between the current jet and the proton remnants. We calculate the spectrum at large $p_T$ with the BFKL $\ln (1/x)$ resummation included and then repeat the calculation with it omitted. We find that data favour the former. We normalize our BFKL predictions by comparing with HERA data for DIS containing a forward jet. The shape of the $x$ distribution of DIS + jet data are also well described by BFKL dynamics.

hep-ph↗

arXiv1996

Forward $π^0$ trigger of the deep inelastic + jet probe of BFKL dynamics

We predict the rate of deep inelastic scattering (DIS) events containing an identified forward $π^0$ that is expected in the experiments at the HERA electron-proton collider, in order to see if this process can be used as an indicator of the underlying small $x$ dynamics. We determine the background due to deep inelastic events containing forward photons which are fragments of the forward jet. We compare the DIS + $π^0$ cross section with that of the DIS + parent jet process.

hep-ph↗

arXiv1996

Deep inelastic events containing a forward photon as a probe of small $x$ dynamics

We calculate the rate of producing deep inelastic events containing an energetic isolated forward photon at HERA. We quantify the enhancement arising from the leading $\log 1/x$ gluon emissions with a view to using such events to identify the underlying dynamics.

hep-ph↗