Evidence for a bottom baryon resonance Λ[*0 over b] in CDF data
Using data from proton-antiproton collisions at s√ = 1.96 TeV recorded by the CDF II detector at the Fermilab Tevatron, evidence for the excited resonance state Λ[*0 over b] is presented in its Λ[0 over b]π[superscript −]π[superscript +] decay followed by the Λ[0 over b] → Λ[+ over c]π[superscript...
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| Format: | Article |
| Language: | en_US |
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American Physical Society
2014
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| Online Access: | http://hdl.handle.net/1721.1/84697 https://orcid.org/0000-0002-6047-4211 |
| _version_ | 1811089772328779776 |
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| author | Gomez-Ceballos, Guillelmo Goncharov, Maxim Paus, Christoph M. E. |
| author2 | Massachusetts Institute of Technology. Department of Physics |
| author_facet | Massachusetts Institute of Technology. Department of Physics Gomez-Ceballos, Guillelmo Goncharov, Maxim Paus, Christoph M. E. |
| author_sort | Gomez-Ceballos, Guillelmo |
| collection | MIT |
| description | Using data from proton-antiproton collisions at s√ = 1.96 TeV recorded by the CDF II detector at the Fermilab Tevatron, evidence for the excited resonance state Λ[*0 over b] is presented in its Λ[0 over b]π[superscript −]π[superscript +] decay followed by the Λ[0 over b] → Λ[+ over c]π[superscript −] and Λ[+ over c] → pK[superscript −]π[superscript +] decays. The analysis is based on a data sample corresponding to an integrated luminosity of 9.6 fb[superscript −1] collected by an online event selection based on charged-particle tracks displaced from the proton-antiproton interaction point. The significance of the observed signal is 3.5σ. The mass of the observed state is found to be 5919.22 ± 0.76 MeV/c[superscript 2] in agreement with similar findings in proton-proton collision experiments. |
| first_indexed | 2024-09-23T14:24:28Z |
| format | Article |
| id | mit-1721.1/84697 |
| institution | Massachusetts Institute of Technology |
| language | en_US |
| last_indexed | 2024-09-23T14:24:28Z |
| publishDate | 2014 |
| publisher | American Physical Society |
| record_format | dspace |
| spelling | mit-1721.1/846972022-10-01T21:10:16Z Evidence for a bottom baryon resonance Λ[*0 over b] in CDF data Gomez-Ceballos, Guillelmo Goncharov, Maxim Paus, Christoph M. E. Massachusetts Institute of Technology. Department of Physics Massachusetts Institute of Technology. Laboratory for Nuclear Science Gomez-Ceballos, Guillelmo Goncharov, Maxim Paus, Christoph M. E. Using data from proton-antiproton collisions at s√ = 1.96 TeV recorded by the CDF II detector at the Fermilab Tevatron, evidence for the excited resonance state Λ[*0 over b] is presented in its Λ[0 over b]π[superscript −]π[superscript +] decay followed by the Λ[0 over b] → Λ[+ over c]π[superscript −] and Λ[+ over c] → pK[superscript −]π[superscript +] decays. The analysis is based on a data sample corresponding to an integrated luminosity of 9.6 fb[superscript −1] collected by an online event selection based on charged-particle tracks displaced from the proton-antiproton interaction point. The significance of the observed signal is 3.5σ. The mass of the observed state is found to be 5919.22 ± 0.76 MeV/c[superscript 2] in agreement with similar findings in proton-proton collision experiments. United States. Dept. of Energy National Science Foundation (U.S.) Alfred P. Sloan Foundation 2014-02-07T19:10:34Z 2014-02-07T19:10:34Z 2013-10 2013-08 Article http://purl.org/eprint/type/JournalArticle 1550-7998 1550-2368 http://hdl.handle.net/1721.1/84697 Aaltonen, T., S. Amerio, D. Amidei, A. Anastassov, A. Annovi, J. Antos, G. Apollinari, et al. “Evidence for a bottom baryon resonance Λ[*0 over b] in CDF data.” Physical Review D 88, no. 7 (October 2013). © 2013 American Physical Society https://orcid.org/0000-0002-6047-4211 en_US http://dx.doi.org/10.1103/PhysRevD.88.071101 Physical Review D Article is made available in accordance with the publisher's policy and may be subject to US copyright law. Please refer to the publisher's site for terms of use. application/pdf American Physical Society American Physical Society |
| spellingShingle | Gomez-Ceballos, Guillelmo Goncharov, Maxim Paus, Christoph M. E. Evidence for a bottom baryon resonance Λ[*0 over b] in CDF data |
| title | Evidence for a bottom baryon resonance Λ[*0 over b] in CDF data |
| title_full | Evidence for a bottom baryon resonance Λ[*0 over b] in CDF data |
| title_fullStr | Evidence for a bottom baryon resonance Λ[*0 over b] in CDF data |
| title_full_unstemmed | Evidence for a bottom baryon resonance Λ[*0 over b] in CDF data |
| title_short | Evidence for a bottom baryon resonance Λ[*0 over b] in CDF data |
| title_sort | evidence for a bottom baryon resonance λ 0 over b in cdf data |
| url | http://hdl.handle.net/1721.1/84697 https://orcid.org/0000-0002-6047-4211 |
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