Please use this identifier to cite or link to this item:
http://dr.iiserpune.ac.in:8080/xmlui/handle/123456789/8530
Full metadata record
DC Field | Value | Language |
---|---|---|
dc.contributor.author | CMS Collaboration | en_US |
dc.contributor.author | Hayrapetyan, A. | en_US |
dc.contributor.author | ALPANA, A. | en_US |
dc.contributor.author | DUBE, SOURABH | en_US |
dc.contributor.author | KANSAL, B. | en_US |
dc.contributor.author | LAHA, A. | en_US |
dc.contributor.author | RASTOGI, A. | en_US |
dc.contributor.author | SHARMA, SEEMA et al. | en_US |
dc.date.accessioned | 2024-02-12T11:50:43Z | - |
dc.date.available | 2024-02-12T11:50:43Z | - |
dc.date.issued | 2023-09 | en_US |
dc.identifier.citation | Physical Review Letters, 131(09), 091903. | en_US |
dc.identifier.issn | 0031-9007 | en_US |
dc.identifier.issn | 1079-7114 | en_US |
dc.identifier.uri | https://doi.org/10.1103/PhysRevLett.131.091903 | en_US |
dc.identifier.uri | http://dr.iiserpune.ac.in:8080/xmlui/handle/123456789/8530 | - |
dc.description.abstract | A search for the rare eta -> mu(+)mu(-)mu(+)mu(-) double-Dalitz decay is performed using a sample of proton-proton collisions, collected by the CMS experiment at the CERN LHC with high-rate muon triggers during 2017 and 2018 and corresponding to an integrated luminosity of 101 fb(-1). A signal having a statistical significance well in excess of 5 standard deviations is observed. Using the eta -> mu(+)mu(-) decay as normalization, the branching fraction B(eta -> mu(+)mu(-)mu(+)mu(-)) = [5.0 +/- 0.8(stat) +/- 0.7(syst) +/- 0.7(B-2 mu)] x 10(-9) is measured, where the last term is the uncertainty in the normalization channel branching fraction. This work achieves an improved precision of over 5 orders of magnitude compared to previous results, leading to the first measurement of this branching fraction, which is found to agree with theoretical predictions. | en_US |
dc.language.iso | en | en_US |
dc.publisher | American Physical Society | en_US |
dc.subject | Physics | en_US |
dc.subject | 2023 | en_US |
dc.title | Observation of the Rare Decay of the η Meson to Four Muons | en_US |
dc.type | Article | en_US |
dc.contributor.department | Dept. of Physics | en_US |
dc.identifier.sourcetitle | Physical Review Letters | en_US |
dc.publication.originofpublisher | Foreign | en_US |
Appears in Collections: | JOURNAL ARTICLES |
Files in This Item:
There are no files associated with this item.
Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.