Speaker
Yu Fu
(Duke university)
Description
Recent LHCb measurements (2410.18018) of the transverse momentum distribution of prompt $\psi$(2S) production in jets from $pp$ collision at the centre-of-mass energy of 13 TeV cannot be explained by fixed order NRQCD followed by naive PYTHIA shower. We use two different frameworks: Fragmenting Jet Functions + NRQCD and Gluon Fragmentation Improved PYTHIA to study the production of $\psi$(2S). Both these approaches provide a much better description of the data in the $\eta_{\text{jet}}=2.5-4.0$ and different $p_T$ bins in the $15-60$ GeV/c range. These frameworks shed light on the production mechanism of the $\psi$(2S) at the LHC and can be used to extract the nonperturbative NRQCD long distance matrix elements.
| Is this an experimental talk? | No |
|---|---|
| Is this on behalf of a collaboration? | Yes |
| Which collaboration? | Heavy Flavor Theory (HEFTY) |
| Are you willing to present as a poster if it is not selected for oral presentation? | Yes |
Authors
Marston Copeland
(Los Alamos National Laboratory)
Lin Dai
Yu Fu
(Duke university)
Jyotirmoy Roy