Production cross sections of hyperons and charmed baryons from $e^+e^-$ annihilation near $\sqrt{s} = 10.52$~GeV

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 ϒ(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.

electron positron: colliding beams
particle: heavy
hyperon: direct production
charmed baryon: direct production
electron positron: annihilation
Sigma(1385)
inclusive production
Upsilon(10570): electroproduction
multiplicity
ground state

References(41)

Figures(16)

[1]

Review of Particle Physics

C. Patrignani
(
- Bologna U. and
- INFN, Bologna
)
,
K. Agashe
(
- Maryland U.
)
,
G. Aielli
(
- U. Rome 2, Tor Vergata (main)
)
,
C. Amsler
(
- U. Bern, AEC and
- Stefan Meyer Inst. Subatomare Phys.
)
,
M. Antonelli
(
- Frascati
)

et al.

- Chin.Phys.C 40 (2016) 10, 100001
•
DOI:
- 10.1088/1674-1137/40/10/100001

[2]

Parton Fragmentation and String Dynamics

- Phys.Rept. 97 (1983) 31-145
•
DOI:
- 10.1016/0370-1573(83)90080-7

[3]

Diquarks

Mauro Anselmino
(
- Turin U. and
- INFN, Turin
)
,
Enrico Predazzi
(
- Turin U. and
- INFN, Turin
)
,
Svante Ekelin
(
- Royal Inst. Tech., Stockholm
)
,
Sverker Fredriksson
(
- Lulea U.
)
,
D.B. Lichtenberg
(
- Indiana U.
)

- Rev.Mod.Phys. 65 (1993) 1199-1234
•
DOI:
- 10.1103/RevModPhys.65.1199

[4]

Exotica

R.L. Jaffe
(
- MIT, LNS
)

- Phys.Rept. 409 (2005) 1-45,
- In *Minneapolis 2004, Continuous advances in QCD* 191-214,
•
e-Print:
- hep-ph/0409065
•
DOI:
- 10.1016/j.physrep.2004.11.005

[5]

Diquarks as inspiration and as objects

Frank Wilczek

- ,
- In *Shifman, M. (ed.) et al.: From fields to strings, vol. 1* 77-93
•
e-Print:
- hep-ph/0409168
•
DOI:
- 10.1142/9789812775344_0007

[5]

Hadron systematics and emergent diquarks

Alexander Selem
(
- MIT, LNS and
- MIT and
- UC, Berkeley
)
,
Frank Wilczek
(
- MIT, LNS and
- MIT
)

[9]

Physics Achievements from the Belle Experiment

Belle

Collaboration

•

Jolanta Brodzicka
(
- Cracow, INP
)

et al.

- PTEP 2012 (2012) 04D001
•
e-Print:
- 1212.5342
•
DOI:
- 10.1093/ptep/pts072

[7]

Overview of the KEKB accelerators

S. Kurokawa
(
- KEK, Tsukuba
)
,
Eiji Kikutani
(
- KEK, Tsukuba
)

- Nucl.Instrum.Meth.A 499 (2003) 1-7
•
DOI:
- 10.1016/S0168-9002(02)01771-0

[7]

Achievements of KEKB

et al.

- PTEP 2013 (2013) 03A001
•
DOI:
- 10.1093/ptep/pts102

[8]

The Belle Detector

Belle

Collaboration

•

A. Abashian

et al.

- Nucl.Instrum.Meth.A 479 (2002) 117-232
•
DOI:
- 10.1016/S0168-9002(01)02013-7

[9]

Physics Achievements from the Belle Experiment

Belle

Collaboration

•

Jolanta Brodzicka
(
- Cracow, INP
)

et al.

- PTEP 2012 (2012) 04D001
•
e-Print:
- 1212.5342
•
DOI:
- 10.1093/ptep/pts072

[10]

High-energy physics event generation with PYTHIA 5.7 and JETSET 7.4

Torbjorn Sjostrand
(
- CERN
)

- Comput.Phys.Commun. 82 (1994) 74-90,
- CERN Geneva - TH. 7111 (93/12,rec.Jan.94) 17 p. and e: CERN th-7111-93
•
DOI:
- 10.1016/0010-4655(94)90132-5

[11]

GEANT3

[12]

Proper time resolution function for measurement of time evolution of B mesons at the KEK B factory

et al.

- Nucl.Instrum.Meth.A 533 (2004) 370-386
•
e-Print:
- hep-ex/0301026
•
DOI:
- 10.1016/j.nima.2004.07.199

[13]

Inclusive Lambda(c)+ Production in e+ e- Annihilations at s**(1/2) = 10.54-GeV and in Upsilon(4S) Decays

BaBar

Collaboration

•

Bernard Aubert
(
- Savoie U. and
- Annecy, LAPP
)

et al.

- Phys.Rev.D 75 (2007) 012003
•
e-Print:
- hep-ex/0609004
•
DOI:
- 10.1103/PhysRevD.75.012003

[14]

Charm hadrons from fragmentation and B decays in e+ e- annihilation at s**(1/2) = 10.6-GeV

Belle

Collaboration

•

R. Seuster
(
- Hawaii U.
)

et al.

- Phys.Rev.D 73 (2006) 032002
•
e-Print:
- hep-ex/0506068
•
DOI:
- 10.1103/PhysRevD.73.032002

[15]

J. Humlicek

- J.Quant.Spectrosc.Radiat.Trans. 21 (1982) 437

[16]

Strong and electromagnetic decays of two new Lambda(c)* baryons

Peter L. Cho
(
- Caltech
)

- Phys.Rev.D 50 (1994) 3295-3302
•
e-Print:
- hep-ph/9401276
•
DOI:
- 10.1103/PhysRevD.50.3295

[17]

Measurements of the properties of $\Lambda_c(2595)$ , $\Lambda_c(2625)$ , $\Sigma_c(2455)$ , and $\Sigma_c(2520)$ baryons

CDF

Collaboration

•

T. Aaltonen
(
- Helsinki Inst. of Phys.
)

et al.

- Phys.Rev.D 84 (2011) 012003
•
e-Print:
- 1105.5995
•
DOI:
- 10.1103/PhysRevD.84.012003

[18]

Measurements of the masses and widths of the $\Sigma_{c}(2455)^{0/++}$ and $\Sigma_{c}(2520)^{0/++}$ baryons

Belle

Collaboration

•

S.H. Lee
(
- Korea U.
)

et al.

- Phys.Rev.D 89 (2014) 9, 091102
•
e-Print:
- 1404.5389
•
DOI:
- 10.1103/PhysRevD.89.091102

[19]

Perturbative QCD fragmentation functions for $B_c$ and $B_{c}$ * production

- Phys.Rev.D 48 (1993) 11, R5049
•
e-Print:
- hep-ph/9305206
•
DOI:
- 10.1103/PhysRevD.48.R5049

[19]

Perturbative QCD fragmentation functions as a model for heavy quark fragmentation

- Phys.Rev.D 51 (1995) 4819-4829
•
e-Print:
- hep-ph/9409316
•
DOI:
- 10.1103/PhysRevD.51.4819

[20]

e+ e- Production of Heavy Quarks in the String Model

M.G. Bowler
(
- Oxford U.
)

- Z.Phys.C 11 (1981) 169,
- Z. Phys. C11 ( 1981) 169-174 and Oxford Univ. - 81-31 (81,REC.MAY) 18p
•
DOI:
- 10.1007/BF01574001

[21]

Scaling Violations in Inclusive e+ e- Annihilation Spectra

- Phys.Rev.D 27 (1983) 105
•
DOI:
- 10.1103/PhysRevD.27.105

[22]

Heavy Quark Fragmentation Into Mesons and Baryons

- Sov.J.Nucl.Phys. 29 (1979) 390,
- Yad.Fiz. 29 (1979) 757-760,
- YAD. FIZ. 29 (1979) 757-760 AND SERPUKHOV INST HIGH EN PHYS - 78-33 (78,REC.JUN) 8 P

1-25 of 41
1
2
25 / page

Production cross sections of hyperons and charmed baryons from e+e−e^+e^-e+e− annihilation near s=10.52\sqrt{s} = 10.52s​=10.52~GeV

Citations per year

Production cross sections of hyperons and charmed baryons from $e^+e^-$ annihilation near $\sqrt{s} = 10.52$ ~GeV