Charged kaon femtoscopic correlations in pp collisions at [radical]s = 7 TeV

Correlations of two charged identical kaons (K super(ch)K super(ch)) are measured in pp collisions at [radical]s = 7 TeV by the ALICE experiment at the Large Hadron Collider (LHC). One-dimensional K super(ch)K super(ch) correlation functions are constructed in three multiplicity and four transverse momentum ranges. The K super(ch)K super(ch) femtoscopic source parameters R and [lambda] are extracted. The K super(ch)K super(ch) correlations show a slight increase of femtoscopic radii with increasing multiplicity and a slight decrease of radii with increasing transverse momentum. These trends are similar to the ones observed for [pi][pi] and (ProQuest: Formulae and/or non-USASCII text omitted) correlations in pp and heavy-ion collisions. However at high multiplicities, there is an indication that the one-dimensional correlation radii for charged kaons are larger than those for pions in contrast to what was observed in heavy-ion collisions at the Relativistic Heavy-Ion Collider.