First measurement of Ds1(1+)(2536)+\mathrm{D_{s1}}(1^{+})(2536)^+ and Ds2(2+)(2573)+\mathrm{D_{s2}^{*}(2^{+})(2573)^+} production in proton--proton collisions at s=13\sqrt{s} = 13 TeV at the LHC

Collaboration
Sep 18, 2024
21 pages
e-Print:
Report number:
  • CERN-EP-2024-233
Experiments:

Citations per year

0 Citations
Abstract: (arXiv)
The production yields of the orbitally excited charm-strange mesons Ds1(1+)(2536)+\mathrm{D_{s1}(1^{+})(2536)^+} and Ds2(2+)(2573)+\mathrm{D_{s2}^{*}(2^{+})(2573)^+} were measured for the first time in proton--proton (pp) collisions at a center-of-mass energy of s=13\sqrt{s} =13 TeV with the ALICE experiment at the LHC. The Ds1+\mathrm{D_{s1}^+} and Ds2+\mathrm{D_{s2}^{*+}} mesons were measured at midrapidity (y<0.5|y|<0.5) in minimum-bias and high-multiplicity pp collisions in the transverse-momentum interval 2<pT<242 < p_{\rm T} < 24 GeV/cc. Their production yields relative to the Ds+\mathrm{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\mathrm{e^\pm p} and e+e\mathrm{e^{+}e^{-}} collisions. The measured Ds1+/Ds+\mathrm{D_{s1}^+/D_{s}^{+}} and Ds2+/Ds+\mathrm{D_{s2}^{*+}/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.
Note: