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Measurement of the properties of the Ξb∗ 0 baryon
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LHCb collaboration (Including: Back, J. J., Blake, Thomas, Crocombe, Andrew, Gershon, T. J., Kreps, Michal, Langenbruch, Christoph, Latham, Thomas, Loh, David, Mathad, Abhijit , O'Hanlon, Daniel P., Poluektov, Anton, Wallace, Charlotte and Wicht, Jean). (2016) Measurement of the properties of the Ξb∗ 0 baryon. Journal of High Energy Physics, 2016 (5). 161. doi:10.1007/jhep05(2016)161 ISSN 1029-8479.
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Official URL: http://dx.doi.org/10.1007/jhep05(2016)161
Abstract
We perform a search for near-threshold Ξb0 resonances decaying to Ξb−π+ in a sample of proton-proton collision data corresponding to an integrated luminosity of 3 fb−1 collected by the LHCb experiment. We observe one resonant state, with the following properties: mΞb∗0−mΞb−−mπ+=15.727±0.068stat±0.023systMeV/c2ΓΞb∗0=0.90±0.16stat±0.08systMeV.This confirms the previous observation by the CMS collaboration. The state is consistent with the JP = 3/2+ Ξb∗ 0 resonance expected in the quark model. This is the most precise determination of the mass and the first measurement of the natural width of this state. We have also measured the ratio σpp→Ξb∗0XℬΞb∗0→Ξb−π+σpp→Ξb−X=0.28±0.03stat.±0.01syst..
Item Type: | Journal Article | ||||||
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Divisions: | Faculty of Science, Engineering and Medicine > Science > Physics | ||||||
SWORD Depositor: | Library Publications Router | ||||||
Journal or Publication Title: | Journal of High Energy Physics | ||||||
Publisher: | Springer Berlin Heidelberg | ||||||
ISSN: | 1029-8479 | ||||||
Official Date: | 27 May 2016 | ||||||
Dates: |
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Volume: | 2016 | ||||||
Number: | 5 | ||||||
Article Number: | 161 | ||||||
DOI: | 10.1007/jhep05(2016)161 | ||||||
Status: | Peer Reviewed | ||||||
Publication Status: | Published | ||||||
Access rights to Published version: | Open Access (Creative Commons) | ||||||
Date of first compliant deposit: | 14 September 2018 | ||||||
Date of first compliant Open Access: | 14 September 2018 |
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