Abstract
We measure the inclusive production cross sections of hyperons and charmed baryons from e+e- annihilation using a 800 fb-1 data sample taken near the (4S) resonance with the Belle detector at the KEKB asymmetric-energy e+e- collider. The feed-down contributions from heavy particles are subtracted using our data, and the direct production cross sections are presented for the first time. The production cross sections divided by the number of spin states for S=-1 hyperons follow an exponential function with a single slope parameter except for the Σ(1385)+ resonance. Suppression for Σ(1385)+ and Ξ(1530)0 hyperons is observed. Among the production cross sections of charmed baryons, a factor of 3 difference for Λc+ states over Σc states is observed. This observation suggests a diquark structure for these baryons.
| Original language | English |
|---|---|
| Article number | 072005 |
| Journal | Physical Review D |
| Volume | 97 |
| Issue number | 7 |
| DOIs | |
| Publication status | Published - 2018 Apr 1 |
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ASJC Scopus subject areas
- Physics and Astronomy (miscellaneous)
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Production cross sections of hyperons and charmed baryons from e+e- annihilation near s =10.52 GeV. / (Belle Collaboration).
In: Physical Review D, Vol. 97, No. 7, 072005, 01.04.2018.Research output: Contribution to journal › Article
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TY - JOUR
T1 - Production cross sections of hyperons and charmed baryons from e+e- annihilation near s =10.52 GeV
AU - (Belle Collaboration)
AU - Niiyama, M.
AU - Sumihama, M.
AU - Nakano, T.
AU - Adachi, I.
AU - Aihara, H.
AU - Al Said, S.
AU - Asner, D. M.
AU - Aulchenko, V.
AU - Aushev, T.
AU - Ayad, R.
AU - Babu, V.
AU - Badhrees, I.
AU - Bakich, A. M.
AU - Bansal, V.
AU - Barberio, E.
AU - Berger, M.
AU - Bhardwaj, V.
AU - Bhuyan, B.
AU - Biswal, J.
AU - Bobrov, A.
AU - Bonvicini, G.
AU - Bozek, A.
AU - Bračko, M.
AU - Browder, T. E.
AU - Červenkov, D.
AU - Chang, M. C.
AU - Chekelian, V.
AU - Chen, A.
AU - Cheon, B. G.
AU - Chilikin, K.
AU - Chistov, R.
AU - Cho, K.
AU - Choi, Y.
AU - Cinabro, D.
AU - Dash, N.
AU - Di Carlo, S.
AU - DoleŽal, Z.
AU - Drásal, Z.
AU - Dutta, D.
AU - Eidelman, S.
AU - Farhat, H.
AU - Fast, J. E.
AU - Ferber, T.
AU - Fulsom, B. G.
AU - Gaur, V.
AU - Gabyshev, N.
AU - Garmash, A.
AU - Gillard, R.
AU - Goldenzweig, P.
AU - Won, Eunil
PY - 2018/4/1
Y1 - 2018/4/1
N2 - We measure the inclusive production cross sections of hyperons and charmed baryons from e+e- annihilation using a 800 fb-1 data sample taken near the (4S) resonance with the Belle detector at the KEKB asymmetric-energy e+e- collider. The feed-down contributions from heavy particles are subtracted using our data, and the direct production cross sections are presented for the first time. The production cross sections divided by the number of spin states for S=-1 hyperons follow an exponential function with a single slope parameter except for the Σ(1385)+ resonance. Suppression for Σ(1385)+ and Ξ(1530)0 hyperons is observed. Among the production cross sections of charmed baryons, a factor of 3 difference for Λc+ states over Σc states is observed. This observation suggests a diquark structure for these baryons.
AB - We measure the inclusive production cross sections of hyperons and charmed baryons from e+e- annihilation using a 800 fb-1 data sample taken near the (4S) resonance with the Belle detector at the KEKB asymmetric-energy e+e- collider. The feed-down contributions from heavy particles are subtracted using our data, and the direct production cross sections are presented for the first time. The production cross sections divided by the number of spin states for S=-1 hyperons follow an exponential function with a single slope parameter except for the Σ(1385)+ resonance. Suppression for Σ(1385)+ and Ξ(1530)0 hyperons is observed. Among the production cross sections of charmed baryons, a factor of 3 difference for Λc+ states over Σc states is observed. This observation suggests a diquark structure for these baryons.
UR - http://www.scopus.com/inward/record.url?scp=85046756937&partnerID=8YFLogxK
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U2 - 10.1103/PhysRevD.97.072005
DO - 10.1103/PhysRevD.97.072005
M3 - Article
AN - SCOPUS:85046756937
VL - 97
JO - Physical Review D
JF - Physical Review D
SN - 2470-0010
IS - 7
M1 - 072005
ER -