Observation of New Resonances Decaying to J/ψK+ and J/ψϕ; Physical Review Letters; Vol. 127, iss. 8

Observation of New Resonances Decaying to J/ψK+ and J/ψϕ; Physical Review Letters; Vol. 127, iss. 8

Bibliografiske detaljer
Parent link:	Physical Review Letters Vol. 127, iss. 8.— 2021.— [082001, 11 p.]
Corporate Authors:	Национальный исследовательский Томский политехнический университет Инженерная школа информационных технологий и робототехники Отделение автоматизации и робототехники (ОАР), Национальный исследовательский Томский политехнический университет Исследовательская школа физики высокоэнергетических процессов
Andre forfattere:	Aaij R. Roel, Beteta C. A. Carlos Abellan, Eydelman S. I. Semen Isaakovich, Kharisova A. E. Anastasiya Evgenjevna, Panshin G. L. Gennady Leonidovich
Summary:	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.
Sprog:	engelsk
Udgivet:	2021
Fag:	электронный ресурс труды учёных ТПУ
Online adgang:	http://earchive.tpu.ru/handle/11683/72773 https://doi.org/10.1103/PhysRevLett.127.082001
Format:	MixedMaterials Electronisk Book Chapter
KOHA link:	https://koha.lib.tpu.ru/cgi-bin/koha/opac-detail.pl?biblionumber=666690

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