Sabin Thapa

May 13, 2024 | link.aps.org | Michael Strickland |Sabin Thapa |Ramona Vogt

We compute the suppression of ϒ(1S), ϒ(2S), and ϒ(3S) states in p-Pb collisions relative to pp collisions, including nuclear parton distribution function (nPDF) effects, coherent energy loss, momentum broadening, and final-state interactions in the quark-gluon plasma. We employ the EPPS21 nPDFs and calculate the uncertainty resulting from variation over the associated error sets. To compute coherent energy loss and momentum broadening, we follow the approach of Arleo, Peigne, and collaborators.

Nov 16, 2023 | link.aps.org | Jacob Boyd |Michael Strickland |Sabin Thapa

We extract transverse-momentum-dependent feed-down fractions for bottomonium production using a data-driven approach. We use data published by the ATLAS, CMS, and LHCb Collaborations for s=7  TeV proton-proton collisions. Based on this collected data, we produce fits to the differential cross sections for the production of both S- and P-wave bottomonium states.

Jul 25, 2023 | link.aps.org | Michael Strickland |Sabin Thapa

Abstract We present potential nonrelativistic quantum chromodynamics (pNRQCD) predictions for bottomonium suppression in sNN=200GeV, 2.76 TeV, and 5.02 TeV heavy-ion collisions using an open quantum system (OQS) description of the reduced heavy-quark antiquark density matrix. Compared to prior OQS+pNRQCD studies we include the rapidity dependence of bottomonium production and evolution, allowing for a fully three-dimensional description of bottomonium trajectories in the quark-gluon plasma.