The production yields of the orbitally excited charm-strange mesons Ds⁢1⁡(1+)⁢(2536)+ and D*s⁢2⁡(2+)⁢(2573)+ were measured for the first time in proton-proton (pp) collisions at a center-of-mass energy of √𝑠 =13  TeV with the ALICE experiment at the LHC. The D+s⁢1 and D*+s⁢2 mesons were measured at midrapidity (|𝑦| <0.5) in minimum-bias and high-multiplicity pp collisions in the transverse-momentum interval 2<𝑝T<24  GeV/𝑐. Their production yields relative to the D+s ground-state yield were found to be compatible between minimum-bias and high-multiplicity collisions, as well as with previous measurements in e±⁢p and e+⁢e− collisions. The measured D+s⁢1/D+s and D*+s⁢2/D+s yield ratios are described by statistical hadronization models and can be used to tune the parameters governing the production of excited charm-strange hadrons in Monte Carlo generators, such as pythia 8.

First measurement of Ds1(1+)(2536)+ and D*s2(2+)(2573)+ production in proton-proton collisions at √s = 13 TeV at the LHC / Alice, C., Acharya, S., Agarwal, A., Aglieri Rinella, G., Aglietta, L., Agnello, M., Agrawal, N., Ahammed, Z., Ahmad, S., Ahn, S. u., Ahuja, I., Akindinov, A., Akishina, V., Al-Turany, M., Aleksandrov, D., Alessandro, B., Alfanda, H. m., Alfaro Molina, R., Ali, B., Alici, A., et al.. - In: PHYSICAL REVIEW D. - ISSN 2470-0010. - ELETTRONICO. - 111/2025:11(2025), pp. 112005.1-112005.16. [10.1103/physrevd.111.112005]

First measurement of Ds1(1+)(2536)+ and D*s2(2+)(2573)+ production in proton-proton collisions at √s = 13 TeV at the LHC

Camerini, P.;Cattaruzzi, S.;Contin, G.;De Martin, C.;Fragiacomo, E.;Margagliotti, G.  V.;Piano, S.;Rui, R.;Urioni, M.;Villani, A.;Zaccolo, V.;
2025-01-01

Abstract

The production yields of the orbitally excited charm-strange mesons Ds⁢1⁡(1+)⁢(2536)+ and D*s⁢2⁡(2+)⁢(2573)+ were measured for the first time in proton-proton (pp) collisions at a center-of-mass energy of √𝑠 =13  TeV with the ALICE experiment at the LHC. The D+s⁢1 and D*+s⁢2 mesons were measured at midrapidity (|𝑦| <0.5) in minimum-bias and high-multiplicity pp collisions in the transverse-momentum interval 2<𝑝T<24  GeV/𝑐. Their production yields relative to the D+s ground-state yield were found to be compatible between minimum-bias and high-multiplicity collisions, as well as with previous measurements in e±⁢p and e+⁢e− collisions. The measured D+s⁢1/D+s and D*+s⁢2/D+s yield ratios are described by statistical hadronization models and can be used to tune the parameters governing the production of excited charm-strange hadrons in Monte Carlo generators, such as pythia 8.
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11368/3135114
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