Measurement of $ω$ meson production in pp collisions at $\sqrt{s}$ = 13 TeV
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arXiv
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| Format: | Preprint |
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2024
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| _version_ | 1866915316352679936 |
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| author | ALICE Collaboration |
| author_facet | ALICE Collaboration |
| contents | The $p_{\rm T}$-differential cross section of $ω$ meson production in pp collisions at $\sqrt{s}= 13$ TeV at midrapidity ($|y|<0.5$) was measured with the ALICE detector at the LHC, covering an unprecedented transverse-momentum range of $1.6 <p_{\rm T}< 50$ GeV/$c$. The meson is reconstructed via the $ω\rightarrowπ^+π^-π^0$ decay channel. The results are compared with various theoretical calculations: PYTHIA8.2 with the Monash 2013 tune overestimates the data by up to 50%, whereas good agreement is observed with Next-to-Leading Order (NLO) calculations incorporating $ω$ fragmentation using a broken SU(3) model. The $ω/π^0$ ratio is presented and compared with theoretical calculations and the available measurements at lower collision energies. The presented data triples the $p_{\rm T}$ ranges of previously available measurements. A constant ratio of $C^{ω/π^0}=0.578\pm0.006~\text{(stat.)}\pm 0.013~\text{(syst.)}$ is found above a transverse momentum of $4$ GeV/$c$, which is in agreement with previous findings at lower collision energies within the systematic and statistical uncertainties. |
| format | Preprint |
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arxiv_https___arxiv_org_abs_2411_09432 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Measurement of $ω$ meson production in pp collisions at $\sqrt{s}$ = 13 TeV ALICE Collaboration High Energy Physics - Experiment Nuclear Experiment The $p_{\rm T}$-differential cross section of $ω$ meson production in pp collisions at $\sqrt{s}= 13$ TeV at midrapidity ($|y|<0.5$) was measured with the ALICE detector at the LHC, covering an unprecedented transverse-momentum range of $1.6 <p_{\rm T}< 50$ GeV/$c$. The meson is reconstructed via the $ω\rightarrowπ^+π^-π^0$ decay channel. The results are compared with various theoretical calculations: PYTHIA8.2 with the Monash 2013 tune overestimates the data by up to 50%, whereas good agreement is observed with Next-to-Leading Order (NLO) calculations incorporating $ω$ fragmentation using a broken SU(3) model. The $ω/π^0$ ratio is presented and compared with theoretical calculations and the available measurements at lower collision energies. The presented data triples the $p_{\rm T}$ ranges of previously available measurements. A constant ratio of $C^{ω/π^0}=0.578\pm0.006~\text{(stat.)}\pm 0.013~\text{(syst.)}$ is found above a transverse momentum of $4$ GeV/$c$, which is in agreement with previous findings at lower collision energies within the systematic and statistical uncertainties. |
| title | Measurement of $ω$ meson production in pp collisions at $\sqrt{s}$ = 13 TeV |
| topic | High Energy Physics - Experiment Nuclear Experiment |
| url | https://arxiv.org/abs/2411.09432 |