Transverse momentum and multiplicity dependence of $$\varLambda _{c}^{+}/D^{0}$$ Λ c + / D 0 ratio in pp collisions at $$\sqrt{s}=13$$ s = 13 TeV
Abstract We apply an equal-velocity quark combination model to study the $$\varLambda _{c}^{+}/D^{0}$$ Λ c + / D 0 ratio in the range $$p_{T}\lesssim 10$$ p T ≲ 10 GeV/c in pp collisions at $$\sqrt{s}=13$$ s = 13 TeV. We decompose the ratio into four parts which are related to quark numbers, light...
| Main Authors: | , , |
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| Format: | Article |
| Language: | English |
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SpringerOpen
2023-09-01
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| Series: | European Physical Journal C: Particles and Fields |
| Online Access: | https://doi.org/10.1140/epjc/s10052-023-12007-7 |
| _version_ | 1827781099984519168 |
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| author | Jun Song Hai-hong Li Feng-lan Shao |
| author_facet | Jun Song Hai-hong Li Feng-lan Shao |
| author_sort | Jun Song |
| collection | DOAJ |
| description | Abstract We apply an equal-velocity quark combination model to study the $$\varLambda _{c}^{+}/D^{0}$$ Λ c + / D 0 ratio in the range $$p_{T}\lesssim 10$$ p T ≲ 10 GeV/c in pp collisions at $$\sqrt{s}=13$$ s = 13 TeV. We decompose the ratio into four parts which are related to quark numbers, light-flavor quark $$p_{T}$$ p T spectrum, charm quark $$p_{T}$$ p T spectrum, momentum correlation between light and charm quarks, respectively. Their influence on $$\varLambda _{c}^{+}/D^{0}$$ Λ c + / D 0 ratio is individually studied. The curvature property of light-flavor quark $$p_{T}$$ p T spectrum is the main reason of the non-monotonic $$p_{T}$$ p T dependence of $$\varLambda _{c}^{+}/D^{0}$$ Λ c + / D 0 ratio exhibited in high multiplicity events. Moreover, the multiplicity dependence of $$\varLambda _{c}^{+}/D^{0}$$ Λ c + / D 0 ratio as the function of $$p_{T}$$ p T is mainly because of the multiplicity dependence of light-flavor quark $$p_{T}$$ p T spectrum. Using the light-flavor quark $$p_{T}$$ p T spectrum obtained from experimental data of light-flavor hadrons and charm quark $$p_{T}$$ p T spectrum obtained from FONLL and/or PYTHIA calculations, the $$p_{T}$$ p T dependence of experimental data of $$\varLambda _{c}^{+}/D^{0}$$ Λ c + / D 0 ratio in high multiplicity events and that in low multiplicity events in pp collisions at $$\sqrt{s}=13$$ s = 13 TeV are reasonably understood. |
| first_indexed | 2024-03-11T15:14:03Z |
| format | Article |
| id | doaj.art-b47a7e961b554d9fb3555d57fd9edff3 |
| institution | Directory Open Access Journal |
| issn | 1434-6052 |
| language | English |
| last_indexed | 2024-03-11T15:14:03Z |
| publishDate | 2023-09-01 |
| publisher | SpringerOpen |
| record_format | Article |
| series | European Physical Journal C: Particles and Fields |
| spelling | doaj.art-b47a7e961b554d9fb3555d57fd9edff32023-10-29T12:34:09ZengSpringerOpenEuropean Physical Journal C: Particles and Fields1434-60522023-09-0183911410.1140/epjc/s10052-023-12007-7Transverse momentum and multiplicity dependence of $$\varLambda _{c}^{+}/D^{0}$$ Λ c + / D 0 ratio in pp collisions at $$\sqrt{s}=13$$ s = 13 TeVJun Song0Hai-hong Li1Feng-lan Shao2School of Physical Science and Intelligent Engineering, Jining UniversitySchool of Physical Science and Intelligent Engineering, Jining UniversitySchool of Physics and Physical Engineering, Qufu Normal UniversityAbstract We apply an equal-velocity quark combination model to study the $$\varLambda _{c}^{+}/D^{0}$$ Λ c + / D 0 ratio in the range $$p_{T}\lesssim 10$$ p T ≲ 10 GeV/c in pp collisions at $$\sqrt{s}=13$$ s = 13 TeV. We decompose the ratio into four parts which are related to quark numbers, light-flavor quark $$p_{T}$$ p T spectrum, charm quark $$p_{T}$$ p T spectrum, momentum correlation between light and charm quarks, respectively. Their influence on $$\varLambda _{c}^{+}/D^{0}$$ Λ c + / D 0 ratio is individually studied. The curvature property of light-flavor quark $$p_{T}$$ p T spectrum is the main reason of the non-monotonic $$p_{T}$$ p T dependence of $$\varLambda _{c}^{+}/D^{0}$$ Λ c + / D 0 ratio exhibited in high multiplicity events. Moreover, the multiplicity dependence of $$\varLambda _{c}^{+}/D^{0}$$ Λ c + / D 0 ratio as the function of $$p_{T}$$ p T is mainly because of the multiplicity dependence of light-flavor quark $$p_{T}$$ p T spectrum. Using the light-flavor quark $$p_{T}$$ p T spectrum obtained from experimental data of light-flavor hadrons and charm quark $$p_{T}$$ p T spectrum obtained from FONLL and/or PYTHIA calculations, the $$p_{T}$$ p T dependence of experimental data of $$\varLambda _{c}^{+}/D^{0}$$ Λ c + / D 0 ratio in high multiplicity events and that in low multiplicity events in pp collisions at $$\sqrt{s}=13$$ s = 13 TeV are reasonably understood.https://doi.org/10.1140/epjc/s10052-023-12007-7 |
| spellingShingle | Jun Song Hai-hong Li Feng-lan Shao Transverse momentum and multiplicity dependence of $$\varLambda _{c}^{+}/D^{0}$$ Λ c + / D 0 ratio in pp collisions at $$\sqrt{s}=13$$ s = 13 TeV European Physical Journal C: Particles and Fields |
| title | Transverse momentum and multiplicity dependence of $$\varLambda _{c}^{+}/D^{0}$$ Λ c + / D 0 ratio in pp collisions at $$\sqrt{s}=13$$ s = 13 TeV |
| title_full | Transverse momentum and multiplicity dependence of $$\varLambda _{c}^{+}/D^{0}$$ Λ c + / D 0 ratio in pp collisions at $$\sqrt{s}=13$$ s = 13 TeV |
| title_fullStr | Transverse momentum and multiplicity dependence of $$\varLambda _{c}^{+}/D^{0}$$ Λ c + / D 0 ratio in pp collisions at $$\sqrt{s}=13$$ s = 13 TeV |
| title_full_unstemmed | Transverse momentum and multiplicity dependence of $$\varLambda _{c}^{+}/D^{0}$$ Λ c + / D 0 ratio in pp collisions at $$\sqrt{s}=13$$ s = 13 TeV |
| title_short | Transverse momentum and multiplicity dependence of $$\varLambda _{c}^{+}/D^{0}$$ Λ c + / D 0 ratio in pp collisions at $$\sqrt{s}=13$$ s = 13 TeV |
| title_sort | transverse momentum and multiplicity dependence of varlambda c d 0 λ c d 0 ratio in pp collisions at sqrt s 13 s 13 tev |
| url | https://doi.org/10.1140/epjc/s10052-023-12007-7 |
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