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Search for new hadr...
Search for new hadronic decays of h(c) and observation of h(c) -> p(p)over-bar eta
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- Ablikim, M. (author)
- Inst High Energy Phys, Beijing 100049, Peoples R China
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- Adlarson, Patrik (author)
- Uppsala universitet,Kärnfysik
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- Ikegami Andersson, Walter (author)
- Uppsala universitet,Kärnfysik
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- Johansson, Tord (author)
- Uppsala universitet,Kärnfysik
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- Kupsc, Andrzej (author)
- Uppsala universitet,Kärnfysik,Natl Ctr Nucl Res, PL-02093 Warsaw, Poland.
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- Pettersson, Joachim (author)
- Uppsala universitet,Kärnfysik
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- Schönning, Karin, 1978- (author)
- Uppsala universitet,Kärnfysik
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- Thorén, Viktor (author)
- Uppsala universitet,Kärnfysik
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- Wolke, Magnus (author)
- Uppsala universitet,Kärnfysik
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- Zou, J. H. (author)
- Inst High Energy Phys, Beijing 100049, Peoples R China
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(creator_code:org_t)
- Springer Nature, 2022
- 2022
- English.
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In: Journal of High Energy Physics (JHEP). - : Springer Nature. - 1126-6708 .- 1029-8479. ; 2022:5
- Related links:
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https://doi.org/10.1...
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https://uu.diva-port... (primary) (Raw object)
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https://urn.kb.se/re...
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https://doi.org/10.1...
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Abstract
Subject headings
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- A search for the hadronic decays of the h(c) meson to the final states p (p) over bar pi(+)pi(-)pi(0), p (p) over bar eta and p (p) over bar pi(0) via the process psi(3686) -> pi(0)(h)c is performed using (4.48 +/- 0.03) x 10(8) psi(3686) events collected with the BESIII detector. The decay channel h(c) -> p (p) over bar eta is observed for the first time with a significance greater than 5 sigma and a branching fraction of (6.41 +/- 1.74 +/- 0.53 +/- 1.00) x 10(-4), where the uncertainties are statistical, systematic, and that from the branching fraction of psi(3686) -> pi(0)(h)c. Strong evidence for the decay h(c) p (p) over bar pi(+)pi(-)pi(0) is found with a significance of 4.9 sigma and a branching fraction of (3.84 +/- 0.83 +/- 0.69 +/- 0.58) x 10(-3). The significances include systematic uncertainties. No clear signal of the decay h(c) -> p (p) over bar pi(0) is found, and an upper limit of 6.59 x 10(-4) on its branching fraction is set at the 90% confidence level.
Subject headings
- NATURVETENSKAP -- Fysik -- Subatomär fysik (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences -- Subatomic Physics (hsv//eng)
Keyword
- Branching fraction
- e(+)- e(-) Experiments
- Particle and Resonance Production
- Quarkonium
Publication and Content Type
- ref (subject category)
- art (subject category)
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