Header

UZH-Logo

Maintenance Infos

Observation of ${\overline{B}}_{(s)}^{0}$\rightarrow${}J/$\psi${}$ ${f}_{1}(1285)$ decays and measurement of the ${f}_{1}(1285)$ mixing angle


LHCb Collaboration; Bernet, R; Müller, K; Steinkamp, O; Straumann, U; Vollhardt, A; et al (2014). Observation of ${\overline{B}}_{(s)}^{0}$\rightarrow${}J/$\psi${}$ ${f}_{1}(1285)$ decays and measurement of the ${f}_{1}(1285)$ mixing angle. Physical Review Letters, 112(091802):online.

Abstract

Decays of ${\overline{B}}_{s}^{0}$ and ${\overline{B}}^{0}$ mesons into $J/$\psi${}$ ${$\pi${}}^{+}$${$\pi${}}^{$-${}}$${$\pi${}}^{+}$${$\pi${}}^{$-${}}$ final states, produced in $pp$ collisions at the LHC, are investigated using data corresponding to an integrated luminosity of $3\text{ }\text{ }\mathrm{fb}{}^{$-${}1}$ collected with the LHCb detector. ${\overline{B}}_{(s)}^{0}$\rightarrow${}J/$\psi${}{f}_{1}(1285)$ decays are seen for the first time, and the branching fractions are measured. Using these rates, the ${f}_{1}(1285)$ mixing angle between strange and nonstrange components of its wave function in the $q\overline{q}$ structure model is determined to be $\pm{}(24.{0}_{$-${}2.6$-${}0.8}^{+3.1+0.6})$. Implications on the possible tetraquark nature of the ${f}_{1}(1285)$ are discussed.

Abstract

Decays of ${\overline{B}}_{s}^{0}$ and ${\overline{B}}^{0}$ mesons into $J/$\psi${}$ ${$\pi${}}^{+}$${$\pi${}}^{$-${}}$${$\pi${}}^{+}$${$\pi${}}^{$-${}}$ final states, produced in $pp$ collisions at the LHC, are investigated using data corresponding to an integrated luminosity of $3\text{ }\text{ }\mathrm{fb}{}^{$-${}1}$ collected with the LHCb detector. ${\overline{B}}_{(s)}^{0}$\rightarrow${}J/$\psi${}{f}_{1}(1285)$ decays are seen for the first time, and the branching fractions are measured. Using these rates, the ${f}_{1}(1285)$ mixing angle between strange and nonstrange components of its wave function in the $q\overline{q}$ structure model is determined to be $\pm{}(24.{0}_{$-${}2.6$-${}0.8}^{+3.1+0.6})$. Implications on the possible tetraquark nature of the ${f}_{1}(1285)$ are discussed.

Statistics

Citations

9 citations in Web of Science®
9 citations in Scopus®
Google Scholar™

Altmetrics

Downloads

37 downloads since deposited on 24 Feb 2015
32 downloads since 12 months
Detailed statistics

Additional indexing

Item Type:Journal Article, refereed, original work
Communities & Collections:07 Faculty of Science > Physics Institute
Dewey Decimal Classification:530 Physics
Language:English
Date:2014
Deposited On:24 Feb 2015 15:16
Last Modified:27 Apr 2017 23:47
Publisher:American Physical Society
ISSN:0031-9007
Publisher DOI:https://doi.org/10.1103/PhysRevLett.112.091802

Download

Preview Icon on Download
Preview
Content: Accepted Version
Filetype: PDF
Size: 462kB
View at publisher

TrendTerms

TrendTerms displays relevant terms of the abstract of this publication and related documents on a map. The terms and their relations were extracted from ZORA using word statistics. Their timelines are taken from ZORA as well. The bubble size of a term is proportional to the number of documents where the term occurs. Red, orange, yellow and green colors are used for terms that occur in the current document; red indicates high interlinkedness of a term with other terms, orange, yellow and green decreasing interlinkedness. Blue is used for terms that have a relation with the terms in this document, but occur in other documents.
You can navigate and zoom the map. Mouse-hovering a term displays its timeline, clicking it yields the associated documents.

Author Collaborations