Evidence for a Narrow Near-Threshold Structure in the J/ψϕ Mass Spectrum in B+→J/ψϕK+ Decays

Timo Aaltonen; Petteri Mehtälä; Risto Orava; Tuula Mäki; Heimo Saarikko; Kenneth Österberg; CDF Collaboration

doi:10.1103/PhysRevLett.102.242002

Evidence for a Narrow Near-Threshold Structure in the J/ψϕ Mass Spectrum in B+→J/ψϕK+ Decays

Julkaisun otsikon käännös: Evidence for a Narrow Near-Threshold Structure in the $J/\psi\phi$ Mass Spectrum in $B^+\to J/\psi\phi K^+$ Decays

Timo Aaltonen, Petteri Mehtälä, Risto Orava, Tuula Mäki, Heimo Saarikko, Kenneth Österberg, CDF Collaboration

Tutkimustuotos: Artikkelijulkaisu › Artikkeli › Tieteellinen › vertaisarvioitu

Abstrakti

Evidence is reported for a narrow structure near the $J/\psi\phi$ threshold in exclusive $B^+\to J/\psi\phi K^+$ decays produced in $\bar{p} p $ collisions at $\sqrt{s}=1.96 \TeV$. A signal of $14\pm5$ events, with statistical significance in excess of 3.8 standard deviations, is observed in a data sample corresponding to an integrated luminosity of $2.7 \ifb$, collected by the CDF II detector. The mass and natural width of the structure are measured to be $4143.0\pm2.9(\mathrm{stat})\pm1.2(\mathrm{syst}) \MeVcc$ and $11.7^{+8.3}_{-5.0}(\mathrm{stat})\pm3.7(\mathrm{syst}) \MeVcc$.

Julkaisun otsikon käännös	Evidence for a Narrow Near-Threshold Structure in the $J/\psi\phi$ Mass Spectrum in $B^+\to J/\psi\phi K^+$ Decays
Alkuperäiskieli	englanti
Lehti	Physical Review Letters
Vuosikerta	102
Numero	24
Sivut	242002
Sivumäärä	7
ISSN	0031-9007
DOI - pysyväislinkit	https://doi.org/10.1103/PhysRevLett.102.242002
Tila	Julkaistu - 2009
OKM-julkaisutyyppi	A1 Alkuperäisartikkeli tieteellisessä aikakauslehdessä, vertaisarvioitu

Lisätietoja

7 pages, 2 figures, published version in Phys. Rev. Lett

Tieteenalat

114 Fysiikka

Pääsy asiakirjaan

10.1103/PhysRevLett.102.242002

pdf

http://prl.aps.org/pdf/PRL/v102/i24/e242002

Siteeraa tätä

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title = "Evidence for a Narrow Near-Threshold Structure in the J/ψϕ Mass Spectrum in B+→J/ψϕK+ Decays",

abstract = "Evidence is reported for a narrow structure near the $J/\psi\phi$ threshold in exclusive $B^+\to J/\psi\phi K^+$ decays produced in $\bar{p} p $ collisions at $\sqrt{s}=1.96 \TeV$. A signal of $14\pm5$ events, with statistical significance in excess of 3.8 standard deviations, is observed in a data sample corresponding to an integrated luminosity of $2.7 \ifb$, collected by the CDF II detector. The mass and natural width of the structure are measured to be $4143.0\pm2.9(\mathrm{stat})\pm1.2(\mathrm{syst}) \MeVcc$ and $11.7^{+8.3}_{-5.0}(\mathrm{stat})\pm3.7(\mathrm{syst}) \MeVcc$.",

keywords = "114 Physical sciences, hep-ex",

author = "Timo Aaltonen and Petteri Meht{\"a}l{\"a} and Risto Orava and Tuula M{\"a}ki and Heimo Saarikko and Kenneth {\"O}sterberg and {CDF Collaboration}",

note = "7 pages, 2 figures, published version in Phys. Rev. Lett ",

year = "2009",

doi = "10.1103/PhysRevLett.102.242002",

language = "English",

volume = "102",

pages = "242002",

journal = "Physical Review Letters",

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TY - JOUR

T1 - Evidence for a Narrow Near-Threshold Structure in the J/ψϕ Mass Spectrum in B+→J/ψϕK+ Decays

AU - Aaltonen, Timo

AU - Mehtälä, Petteri

AU - Orava, Risto

AU - Mäki, Tuula

AU - Saarikko, Heimo

AU - Österberg, Kenneth

AU - CDF Collaboration

N1 - 7 pages, 2 figures, published version in Phys. Rev. Lett

PY - 2009

Y1 - 2009

N2 - Evidence is reported for a narrow structure near the $J/\psi\phi$ threshold in exclusive $B^+\to J/\psi\phi K^+$ decays produced in $\bar{p} p $ collisions at $\sqrt{s}=1.96 \TeV$. A signal of $14\pm5$ events, with statistical significance in excess of 3.8 standard deviations, is observed in a data sample corresponding to an integrated luminosity of $2.7 \ifb$, collected by the CDF II detector. The mass and natural width of the structure are measured to be $4143.0\pm2.9(\mathrm{stat})\pm1.2(\mathrm{syst}) \MeVcc$ and $11.7^{+8.3}_{-5.0}(\mathrm{stat})\pm3.7(\mathrm{syst}) \MeVcc$.

AB - Evidence is reported for a narrow structure near the $J/\psi\phi$ threshold in exclusive $B^+\to J/\psi\phi K^+$ decays produced in $\bar{p} p $ collisions at $\sqrt{s}=1.96 \TeV$. A signal of $14\pm5$ events, with statistical significance in excess of 3.8 standard deviations, is observed in a data sample corresponding to an integrated luminosity of $2.7 \ifb$, collected by the CDF II detector. The mass and natural width of the structure are measured to be $4143.0\pm2.9(\mathrm{stat})\pm1.2(\mathrm{syst}) \MeVcc$ and $11.7^{+8.3}_{-5.0}(\mathrm{stat})\pm3.7(\mathrm{syst}) \MeVcc$.

KW - 114 Physical sciences

KW - hep-ex

U2 - 10.1103/PhysRevLett.102.242002

DO - 10.1103/PhysRevLett.102.242002

M3 - Article

SN - 0031-9007

VL - 102

SP - 242002

JO - Physical Review Letters

JF - Physical Review Letters

IS - 24

ER -