| Autor: |
He Li-Ping, Braaten Eric, Ingles Kevin, Jiang Jun |
| Jazyk: |
angličtina |
| Rok vydání: |
2022 |
| Předmět: |
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| Zdroj: |
EPJ Web of Conferences, Vol 274, p 04014 (2022) |
| Druh dokumentu: |
article |
| ISSN: |
2100-014X |
| DOI: |
10.1051/epjconf/202227404014 |
| Popis: |
If the double-charm tetraquark meson T+cc(3875) is a loosely bound molecule, it can be produced in high-energy proton-proton collisions by the creation of the charm mesons D∗+D0 at short distances followed by their binding into T+cc. It can also be produced by the creation of D∗+D∗+ at short distances followed by their rescattering into T+ccπ+ through a charm-meson triangle loop. A charm-meson triangle singularity produces a narrow peak in the T+ccπ+ invariant mass distribution 6.1 MeV above the threshold with a width of about 1 MeV. The fraction of T+cc that are accompanied by π+ with E < mπ is estimated to be roughly 3%. The fraction of T+cc events with T+ccπ+ in the narrow peak from the triangle singularity could be comparable. |
| Databáze: |
Directory of Open Access Journals |
| Externí odkaz: |
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