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Observation of an a...
Observation of an a(0)-like State with Mass of 1.817 GeV in the Study of D-S(+) -> (KSK+)-K-0 pi(0) Decays
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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,Uppsala Univ, Box 516, SE-75120 Uppsala, Sweden
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- Johansson, Tord (author)
- Uppsala universitet,Kärnfysik,Uppsala Univ, Box 516, SE-75120 Uppsala, Sweden
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- Kupsc, Andrzej (author)
- Uppsala universitet,Kärnfysik,Natl Ctr Nucl Res, PL-02093 Warsaw, Poland;Uppsala Univ, Box 516, SE-75120 Uppsala, Sweden
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- Pettersson, Jean (author)
- Uppsala universitet,Analytisk kemi,Uppsala Univ, Box 516, SE-75120 Uppsala, Sweden
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- Schönning, Karin, 1978- (author)
- Uppsala universitet,Kärnfysik,Uppsala Univ, Box 516, SE-75120 Uppsala, Sweden
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- Thorén, Viktor (author)
- Uppsala universitet,Kärnfysik,Uppsala Univ, Box 516, SE-75120 Uppsala, Sweden
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- Wolke, Magnus (author)
- Uppsala universitet,Kärnfysik,Uppsala Univ, Box 516, SE-75120 Uppsala, Sweden
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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)
- American Physical Society, 2022
- 2022
- English.
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In: Physical Review Letters. - : American Physical Society. - 0031-9007 .- 1079-7114. ; 129:18
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https://uu.diva-port... (primary) (Raw object)
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Abstract
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- Using e(+)e(-) annihilation data corresponding to an integrated luminosity of 6.32 fb(-1) collected at center-of-mass energies between 4.178 and 4.226 GeV with the BESIII detector, we perform the first amplitude analysis of the decay D-s(+) -> (KSK+)-K-0 pi(0) and determine the relative branching fractions and phases for intermediate processes. We observe an a(0)-like state with mass of 1.817 GeV in its decay to (KSK+)-K-0 for the first time. In addition, we measure the ratio {B[D-s(+) -> (K*) over bar (892)K-0(+)]/B[D-s(+) -> (K-0) over bar K*(892)(+)]} to be 2.35(-0.23stat)(+0.42) +/- 0.10(syst). Finally, we provide a precision measurement of the absolute branching fraction B(D-s(+) -> (KSK+)-K-0 pi(0))=(1.46 +/- 0.06(stat) +/- 0.05(syst))%.
Subject headings
- NATURVETENSKAP -- Fysik -- Subatomär fysik (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences -- Subatomic Physics (hsv//eng)
Publication and Content Type
- ref (subject category)
- art (subject category)
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