Search for charmed baryons in the <math display="inline"><msubsup><mi mathvariant="normal">Λ</mi><mi>c</mi><mo>+</mo></msubsup><mi>η</mi></math> system and measurement of the branching fractions of <math display="inline"><msub><mi mathvariant="normal">Λ</mi><mi>c</mi></msub><mo stretchy="false">(</mo><mn>2880</mn><msup><mo stretchy="false">)</mo><mo>+</mo></msup></math> and <math display="inline"><msub><mi mathvariant="normal">Λ</mi><mi>c</mi></msub><mo stretchy="false">(</mo><mn>2940</mn><msup><mo stretchy="false">)</mo><mo>+</mo></msup></math> decaying to <math display="inline"><msubsup><mi mathvariant="normal">Λ</mi><mi>c</mi><mo>+</mo></msubsup><mi>η</mi></math> and <math display="inline"><mi>p</mi><msup><mi>D</mi><mn>0</mn></msup></math> relative to <math display="inline"><msub><mi mathvariant="normal">Σ</mi><mi>c</mi></msub><mo stretchy="false">(</mo><mn>2455</mn><mo stretchy="false">)</mo><mi>π</mi></math>

Li, S.X.; Shen, C.P.; Adachi, I.; Ahn, J.K.; Aihara, H.; Asner, D.M.; Atmacan, H.; Aushev, T.; Ayad, R.; Banerjee, Sw.

doi:10.1103/PhysRevD.110.032021

Search for charmed baryons in the $Λ_{c}^{+} η$ system and measurement of the branching fractions of $Λ_{c} (2880)^{+}$ and $Λ_{c} (2940)^{+}$ decaying to $Λ_{c}^{+} η$ and $p D^{0}$ relative to $Σ_{c} (2455) π$

Belle

Collaboration

•

S.X. Li

Jun 22, 2024

10 pages

Published in:

Phys.Rev.D 110 (2024) 3, 032021

Published: Aug 1, 2024

e-Print:

2406.15965 [hep-ex]

DOI:

10.1103/PhysRevD.110.032021 (publication)

Report number:

Belle Preprint: 2024-06;KEK Preprint: 2024-15

Experiments:

KEK-BF-BELLE

View in:

ADS Abstract Service

pdf

reference search3 citations

Citations per year

Abstract: (APS)

We search for excited charmed baryons in the

Λ_{c}^{+} η

system using a data sample corresponding to an integrated luminosity of

980 {fb}^{- 1}

. The data were collected by the Belle detector at the KEKB

e^{+} e^{-}

asymmetric-energy collider. No significant signals are found in the

Λ_{c}^{+} η

mass spectrum, including the known

Λ_{c} (2880)^{+}

and

Λ_{c} (2940)^{+}

. Clear

Λ_{c} (2880)^{+}

and

Λ_{c} (2940)^{+}

signals are observed in the

p D^{0}

mass spectrum. We set upper limits at 90% credibility level on ratios of branching fractions of

Λ_{c} (2880)^{+}

and

Λ_{c} (2940)^{+}

decaying to

Λ_{c}^{+} η

relative to

Σ_{c} (2455) π

of

< 0.13

for the

Λ_{c} (2880)^{+}

and

< 1.11

for the

Λ_{c} (2940)^{+}

. We measure ratios of branching fractions of

Λ_{c} (2880)^{+}

and

Λ_{c} (2940)^{+}

decaying to

p D^{0}

relative to

Σ_{c} (2455) π

of

0.75 \pm 0.03 (stat) \pm 0.07 (syst)

for the

Λ_{c} (2880)^{+}

and

3.59 \pm 0.21 (stat) \pm 0.56 (syst)

for the

Λ_{c} (2940)^{+}

.

Note:

10 pages, 4 figures, accepted for publication as a Regular Article in Physical Review D

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Search for charmed baryons in the Λc+η system and measurement of the branching fractions of Λc(2880)+ and Λc(2940)+ decaying to Λc+η and pD0 relative to Σc(2455)π

Citations per year

eant 3: User’s guide

Search for charmed baryons in the $Λ_{c}^{+} η$ system and measurement of the branching fractions of $Λ_{c} (2880)^{+}$ and $Λ_{c} (2940)^{+}$ decaying to $Λ_{c}^{+} η$ and $p D^{0}$ relative to $Σ_{c} (2455) π$