Observation of New Resonances Decaying to J/ψK+ and J/ψϕ; Physical Review Letters; Vol. 127, iss. 8
| Parent link: | Physical Review Letters Vol. 127, iss. 8.— 2021.— [082001, 11 p.] |
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| Enti autori: | , |
| Altri autori: | , , , , |
| Riassunto: | 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. |
| Lingua: | inglese |
| Pubblicazione: |
2021
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| Soggetti: | |
| Accesso online: | http://earchive.tpu.ru/handle/11683/72773 https://doi.org/10.1103/PhysRevLett.127.082001 |
| Natura: | Elettronico Capitolo di libro |
| KOHA link: | https://koha.lib.tpu.ru/cgi-bin/koha/opac-detail.pl?biblionumber=666690 |
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| 200 | 1 | |a Observation of New Resonances Decaying to J/ψK+ and J/ψϕ |f R. Aaij, C. A. Beteta, S. I. Eydelman [et al.] | |
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| 300 | |a Title screen | ||
| 320 | |a [References: 33 tit.] | ||
| 330 | |a 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. | ||
| 461 | |t Physical Review Letters | ||
| 463 | |t Vol. 127, iss. 8 |v [082001, 11 p.] |d 2021 | ||
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