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Observation of Stru...
Observation of Structures in the Processes e + e -âwΧc1 and wΧ c2
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- Ablikim, M. (författare)
- Inst High Energy Phys, Beijing 100049, Peoples R China
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- Adlarson, Patrik (författare)
- Uppsala universitet,Kärnfysik
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- Johansson, Tord (författare)
- Uppsala universitet,Kärnfysik
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- Kupsc, Andrzej (författare)
- Uppsala universitet,Kärnfysik,Natl Ctr Nucl Res, PL-02093 Warsaw, Poland.
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- Schönning, Karin, 1978- (författare)
- Uppsala universitet,Kärnfysik
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- Thoren, V. (författare)
- Uppsala universitet,Institutionen för fysik och astronomi
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- Wolke, Magnus (författare)
- Uppsala universitet,Kärnfysik
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- Zu, J. (författare)
- State Key Lab Particle Detect & Elect, Beijing 100049, Peoples R China;Univ Sci & Technol China, Hefei 230026, Peoples R China
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(creator_code:org_t)
- American Physical Society, 2024
- 2024
- Engelska.
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Ingår i: Physical Review Letters. - : American Physical Society. - 0031-9007 .- 1079-7114. ; 132:16
- Relaterad länk:
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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
Ämnesord
Stäng
- We present measurements of the Born cross sections for the processes e(+)e(-)-> w Chi(c1) and w Chi(c1) at centerof-mass energies ffiffiffisp from 4.308 to 4.951 GeV. The measurements are performed with data samples corresponding to an integrated luminosity of 11.0 fb(- 1) collected with the BESIII detector operating at the Beijing Electron Positron Collider storage ring. Assuming the e(+)e(-)-> w Chi(c2) signals come from a single resonance, the mass and width are determined to be M = (4413.6 +/- 9.0 +/- 0.8) MeV/c(2) and Gamma = (110.5 +/- 15.0 +/- 2.9THORN MeV, respectively, which is consistent with the parameters of the wellestablished resonance.o4415THORN. In addition, we also use one single resonance to describe the ethorne-...c1 line shape and determine the mass and width to be M= (4544.2 +/- 18.7 +/- 1.7)MeV=c2 and G = (116.1 +/- 33.5 +/- 1.7) MeV, respectively. The structure of this line shape, observed for the first time, requires further understanding.
Ämnesord
- NATURVETENSKAP -- Fysik -- Subatomär fysik (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences -- Subatomic Physics (hsv//eng)
- NATURVETENSKAP -- Fysik -- Astronomi, astrofysik och kosmologi (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences -- Astronomy, Astrophysics and Cosmology (hsv//eng)
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- art (ämneskategori)
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