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| Title: | Measurement of Prompt D0, Λc+, and Σc 0, ++ (2455) Production in Proton-Proton Collisions at √s = 13 TeV |
| Authors: | Bailung, Yoshini Deb, Suman |
| Issue Date: | 2022 |
| Publisher: | American Physical Society |
| Citation: | Acharya, S., Adamová, D., Adler, A., Adolfsson, J., Aglieri Rinella, G., Agnello, M., Agrawal, N., Ahammed, Z., Ahmad, S., Ahn, S. U., Ahuja, I., Akbar, Z., Akindinov, A., Al-Turany, M., Alam, S. N., Aleksandrov, D., Alessandro, B., Alfanda, H. M., Alfaro Molina, R., … ALICE Collaboration. (2022). Measurement of Prompt D 0 , Λ c + , and Σ c 0 , + + ( 2455 ) Production in Proton-Proton Collisions at s = 13 TeV. Physical Review Letters, 128(1), 012001. https://doi.org/10.1103/PhysRevLett.128.012001 |
| Abstract: | The pT-differential production cross sections of prompt D0, Λc+, and Σc0,++(2455) charmed hadrons are measured at midrapidity (|y|<0.5) in pp collisions at s=13 TeV. This is the first measurement of Σc0,++ production in hadronic collisions. Assuming the same production yield for the three Σc0,+,++ isospin states, the baryon-to-meson cross section ratios Σc0,+,++/D0 and Λc+/D0 are calculated in the transverse momentum (pT) intervals 2<pT<12 and 1<pT<24 GeV/c. Values significantly larger than in e+e- collisions are observed, indicating for the first time that baryon enhancement in hadronic collisions also extends to the Σc. The feed-down contribution to Λc+ production from Σc0,+,++ is also reported and is found to be larger than in e+e- collisions. The data are compared with predictions from event generators and other phenomenological models, providing a sensitive test of the different charm-hadronization mechanisms implemented in the models. © 2022 CERN, for the ALICE Collaboration |
| URI: | https://doi.org/10.1103/PhysRevLett.128.012001 https://dspace.iiti.ac.in/handle/123456789/15246 |
| ISSN: | 0031-9007 |
| Type of Material: | Journal Article |
| Appears in Collections: | Department of Physics |
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