Journal
PHYSICAL REVIEW D
Volume 100, Issue 3, Pages -Publisher
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevD.100.031101
Keywords
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Funding
- MEXT (Japan)
- JSPS (Japan)
- Nagoya's the Tau-Lepton Physics Research Center (TLPRC) (Japan)
- ARC (Australia)
- FWF (Austria)
- National Natural Science Foundation of China (NSFC) (China) [11475187, 11521505, 11575017, 11761141009]
- Chinese Academy of Science Center for Excellence in Particle Physics (CCEPP) (China)
- MSMT (Czechia)
- CarlZeiss Foundation (CZF) (Germany)
- DFG (Germany)
- Excellence Cluster Universe (Germany) [EXC153]
- VolkswagenStiftung (VS) (Germany)
- DST (India)
- INFN (Italy)
- MOE (Korea)
- MSIP (Korea)
- NRF (Korea)
- RSRI (Korea)
- Foreign Large-size Research Facility Application Supporting project (FLRFAS) project of KISTI (Korea)
- GSDC of KISTI (Korea)
- Korea Research Environment Open Network (KREONET)/Global Ring Network for Advanced Application Development (GLORIAD)(Korea)
- MNiSW (Poland)
- NCN (Poland)
- Ministry of Science and Higher Education of the Russian Federation (MSHE) (Russia) [14.W03.31.0026]
- ARRS (Slovenia)
- IKERBASQUE (Spain)
- SNSF (Switzerland)
- MOE (Taiwan)
- MOST (Taiwan)
- DOE (USA)
- NSF (USA)
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We present the first measurements of the absolute branching fractions of Xi(+)(c) decays into Xi(-)pi(+)pi(+) and pK(-)pi(+) final states. Our analysis is based on a data set of (772 +/- 11) x 10(6) B (B) over bar pairs collected at the Upsilon(4S) resonance with the Belle detector at the KEKB e(+)e(-) collider. We measure the absolute branching fraction of (B) over bar (0) -> (Lambda) over bar (-)(c)Xi(+)(c) with the Xi(+)(c) recoiling against (Lambda) over bar (- )(c)in (B) over bar (0) decays resulting in B((B) over bar (0) -> (Lambda) over bar (-)(c)Xi(+)(c)) = [1.16 +/- 0.42(stat.) +/- 0.15(syst.)] x 10(-3). We then measure the product branching fractions B((B) over bar (0) -> (Lambda) over bar (-)(c)Xi(+)(c))B(Xi(+)(c) -> Xi(-)pi(+)pi(+)) and B((B) over bar (0) -> (Lambda) over bar (-)(c)Xi(+)(c))B(Xi(+)(c) -> pK(-)pi(+)). Dividing these product branching fractions by (B) over bar (0) -> (Lambda) over bar (-)(c)Xi(+)(c) yields B(Xi(+)(c) -> Xi(-)pi(+)pi(+)) = [2.86 +/- 1.21(stat.) +/- 0.38(syst.)]% and B(Xi(+)(c) -> pK(-)pi(+)) = [0.45 +/- 0.21(stat.) +/- 0.07(syst.)]%. Our result for B(Xi(+)(c) -> Xi(-)pi(+)pi(+)) can be combined with Xi(+)(c) branching fractions measured relative to Xi(+)(c) -> Xi(-)pi(+)pi(+) to set the absolute scale for many Xi(+)(c) branching fractions.
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