XXVI DAE-BRNS High Energy Physics Symposium 2024

Beauty production in pp collisions at √s = 13 TeV via non-prompt D mesons

Not scheduled

20m

Swatantrata Bhavan, Banaras Hindu University, Varanasi

Postar Heavy ion and QCD

Speaker

Binti Sharma (University of Jammu (IN))

Description

The study of hadron production containing charm or beauty quarks in proton-proton (pp) collisions provides essential insights into the predictions of perturbative quantum chromodynamics (pQCD). The ALICE detector allows for precise measurements of non-prompt D-meson production, which serves as an effective tool to explore the production of beauty quarks in pp collisions.

This analysis presents recent results on the transverse momentum ( $p_{\text{T}}$ )-differential production cross section for D mesons originating from beauty-hadron decays (referred to as non-prompt D mesons). These findings are compared with those for prompt D mesons produced directly in pp collisions at center-of-mass energies of ( $\sqrt{s}$ = 5.02 ) TeV and ( $\sqrt{s}$ = 13 ) TeV. Additionally, the ( $p_{\text{T}}$ )-differential production yield ratios, such as non-prompt ( $D^{+}/D^0$ ) and ( $D_s^{+}/(D^0+D^{+})$ ), are examined, along with measurements of the fragmentation fraction ratio of beauty quarks into strange and non-strange B mesons in pp collisions, to assess their universality across different collision systems. Comparisons with pQCD predictions and other theoretical models are also included. A machine-learning-based multiclass classification algorithm is employed to distinguish D mesons arising from beauty-hadron decays for these measurements.