Observation of New Resonances Decaying to J/ψK+ and J/ψϕ
| Parent link: | Physical Review Letters Vol. 127, iss. 8.— 2021.— [082001, 11 p.] |
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| مؤلفون مشاركون: | , |
| مؤلفون آخرون: | , , , , |
| الملخص: | Title screen The first observation of exotic states with a new quark content c¯cu¯s decaying to the J/ψK+ final state is reported with high significance from an amplitude analysis of the B+→J/ψϕK+ decay. The analysis is carried out using proton-proton collision data corresponding to a total integrated luminosity of 9 fb−1 collected by the LHCb experiment at center-of-mass energies of 7, 8, and 13 TeV. The most significant state, Zcs(4000)+, has a mass of 4003±6+4−14 MeV, a width of 131±15±26 MeV, and spin parity JP=1+, where the quoted uncertainties are statistical and systematic, respectively. A new 1+ X(4685) state decaying to the J/ψϕ final state is also observed with high significance. In addition, the four previously reported J/ψϕ states are confirmed and two more exotic states, Zcs(4220)+ and X(4630), are observed with significance exceeding 5 standard deviations. |
| منشور في: |
2021
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| الموضوعات: | |
| الوصول للمادة أونلاين: | http://earchive.tpu.ru/handle/11683/72773 https://doi.org/10.1103/PhysRevLett.127.082001 |
| التنسيق: | الكتروني فصل الكتاب |
| KOHA link: | https://koha.lib.tpu.ru/cgi-bin/koha/opac-detail.pl?biblionumber=666690 |