Nuclear k T in d+Au collisions from multi-particle jet reconstruction at STAR

Abstract

This paper presents the most recent nuclear k T measurements from STAR derived from multi-particle jet reconstruction of d+Au and p+p collisions at √s=200 GeV. Since jets reconstructed from multiple particles are relatively free of fragmentation biases, nuclear k Tcan be measured with greater certainty in this way than with traditional di-hadron correlations. Multiparticle jet reconstruction can also be used for a direct measurement of the fragmentation function.