Studying charm hadronisation into baryons with azimuthal correlations of Λ+c with charged particles in pp collisions at √𝑠 = 13 TeV: Letter
The distribution of angular correlations between prompt charm hadrons and primary charged particles in pp collisions is sensitive to the charm-quark hadronisation process. In this letter, charm-baryon correlations are measured for the first time by studying the azimuthal-angle difference between cha...
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| Hauptverfasser: | , , , , , , , , , , , , , , , , , , , , , , |
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| Körperschaft: | |
| Dokumenttyp: | Article (Journal) |
| Sprache: | Englisch |
| Veröffentlicht: |
September 2025
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| In: |
Physics letters
Year: 2025, Jahrgang: 868, Pages: 1-18 |
| ISSN: | 0031-9163 |
| DOI: | 10.1016/j.physletb.2025.139681 |
| Online-Zugang: | Verlag, kostenfrei, Volltext: https://doi.org/10.1016/j.physletb.2025.139681 Verlag, kostenfrei, Volltext: https://www.sciencedirect.com/science/article/pii/S0370269325004423 
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| Verfasserangaben: | ALICE Collaboration |
MARC
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| 245 | 1 | 0 | |a Studying charm hadronisation into baryons with azimuthal correlations of Λ+c with charged particles in pp collisions at √ = 13 TeV |b Letter |c ALICE Collaboration |
| 246 | 3 | 0 | |a sqrt |
| 246 | 3 | 3 | |a Studying charm hadronisation into baryons with azimuthal correlations of Lambda + c with charged particles in pp collisions at aquare root equal 13 TeV |
| 264 | 1 | |c September 2025 | |
| 300 | |b Diagramme | ||
| 300 | |a 18 | ||
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| 500 | |a Im Titel erscheitn das + hochgestellt und das c tiefgestellt | ||
| 500 | |a Online verfügbar: 25. Juni 2025, Artikelversion: 02. Juli 2025 | ||
| 500 | |a ALICE Collaboration: S. Acharya, V. Anguelov, A. Berdnikova, L. Bergmann, A.G. Bórquez Carcamo, M.C. Danisch, V.J.G. Feuillard, I. Fokin, P. Glässel, M.W. Menzel, A. Nath, K. Reygers, R. Schicker, F. Schlepper, J.J. Seo, G. Skorodumovs, J. Stachel, S.F. Stiefelmaier, C.A. van Veen, B. Windelband, A. Yüncü, F. Zanone, B. Zhang [und 1047 weitere] | ||
| 500 | |a Gesehen am 18.12.2025 | ||
| 520 | |a The distribution of angular correlations between prompt charm hadrons and primary charged particles in pp collisions is sensitive to the charm-quark hadronisation process. In this letter, charm-baryon correlations are measured for the first time by studying the azimuthal-angle difference between charged particles and prompt Λc+ baryons produced in pp collisions at a centre-of-mass energy of s=13 TeV, with the ALICE detector. Λc+ baryons are reconstructed at midrapidity (|y|<0.5) in the transverse-momentum interval 3<pT<16 GeV/c, and correlated with charged particles with pT>0.3 GeV/c and pseudorapidity |η|<0.8. For 3<pTΛc+,D<5 GeV/c, the comparison with published measurements of D-meson and charged-particle correlations in the same collision system hints at a larger number of low-momentum particles associated with Λc+-baryon triggers than with D-meson triggers, both in the collinear and opposite directions with respect to the trigger particle. These differences can be quantified by the comparison of the properties of the near- and away-side correlation peaks, and are not reproduced by predictions of various Monte Carlo event generators, generally underpredicting the associated particle yields at pTassoc<1 GeV/c. This tension between Λc+-baryon and D-meson associated peak yields could suggest a modified fragmentation of the charm quark, or a different hadronisation process, when a charm baryon is produced in the final state. | ||
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