Observation of Λc+ →n KS0 π+

M. Ablikim; M. N. Achasov; S. Ahmed; X. C. Ai; O.  Albayrak; M. Albrecht; D. J. Ambrose; Z. Haddadi; N. Kalantar-Nayestanaki; M. Kavatsyuk; H. Löhner; J. G. Messchendorp; M. Tiemens; BESIII Collaboration

doi:10.1103/PhysRevLett.118.112001

Observation of Λc⁺ →n KS0 π⁺

M. Ablikim, M. N. Achasov, S. Ahmed, X. C. Ai, O. Albayrak, M. Albrecht, D. J. Ambrose, Z. Haddadi, N. Kalantar-Nayestanaki, M. Kavatsyuk, H. Löhner, J. G. Messchendorp, M. Tiemens, BESIII Collaboration

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We report the first direct measurement of decays of the Λc+ baryon involving the neutron. The analysis is performed using 567 pb-1 of e+e- collision data collected at s=4.599 GeV with the BESIII detector at the BEPCII collider. We observe the decay Λc+→nKS0π+ and measure the absolute branching fraction to be B(Λc+→nKS0π+)=[1.82±0.23(stat)±0.11(syst)]%. A comparison to B[Λc+→p(K̄π)0] provides an important test of isospin symmetry and final state interactions.

Originele taal-2	English
Artikelnummer	112001
Tijdschrift	Physical Review Letters
Volume	118
Nummer van het tijdschrift	11
DOI's	https://doi.org/10.1103/PhysRevLett.118.112001
Status	Published - 14-mrt.-2017

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@article{38aca2d920a4459f91b7e8206ef37d8b,

title = "Observation of Λc+ →n KS0 π+",

abstract = "We report the first direct measurement of decays of the Λc+ baryon involving the neutron. The analysis is performed using 567 pb-1 of e+e- collision data collected at s=4.599 GeV with the BESIII detector at the BEPCII collider. We observe the decay Λc+→nKS0π+ and measure the absolute branching fraction to be B(Λc+→nKS0π+)=[1.82±0.23(stat)±0.11(syst)]%. A comparison to B[Λc+→p({\=K}π)0] provides an important test of isospin symmetry and final state interactions. ",

keywords = "CHARMED BARYONS, DECAYS, RADIATIVE-CORRECTIONS",

author = "M. Ablikim and Achasov, {M. N.} and S. Ahmed and Ai, {X. C.} and O. Albayrak and M. Albrecht and Ambrose, {D. J.} and Z. Haddadi and N. Kalantar-Nayestanaki and M. Kavatsyuk and H. L{\"o}hner and Messchendorp, {J. G.} and M. Tiemens and {BESIII Collaboration}",

year = "2017",

month = mar,

day = "14",

doi = "10.1103/PhysRevLett.118.112001",

language = "English",

volume = "118",

journal = "Physical Review Letters",

issn = "0031-9007",

publisher = "AMER PHYSICAL SOC",

number = "11",

}

TY - JOUR

T1 - Observation of Λc+ →n KS0 π+

AU - Ablikim, M.

AU - Achasov, M. N.

AU - Ahmed, S.

AU - Ai, X. C.

AU - Albayrak, O.

AU - Albrecht, M.

AU - Ambrose, D. J.

AU - Haddadi, Z.

AU - Kalantar-Nayestanaki, N.

AU - Kavatsyuk, M.

AU - Löhner, H.

AU - Messchendorp, J. G.

AU - Tiemens, M.

AU - BESIII Collaboration

PY - 2017/3/14

Y1 - 2017/3/14

N2 - We report the first direct measurement of decays of the Λc+ baryon involving the neutron. The analysis is performed using 567 pb-1 of e+e- collision data collected at s=4.599 GeV with the BESIII detector at the BEPCII collider. We observe the decay Λc+→nKS0π+ and measure the absolute branching fraction to be B(Λc+→nKS0π+)=[1.82±0.23(stat)±0.11(syst)]%. A comparison to B[Λc+→p(K̄π)0] provides an important test of isospin symmetry and final state interactions.

AB - We report the first direct measurement of decays of the Λc+ baryon involving the neutron. The analysis is performed using 567 pb-1 of e+e- collision data collected at s=4.599 GeV with the BESIII detector at the BEPCII collider. We observe the decay Λc+→nKS0π+ and measure the absolute branching fraction to be B(Λc+→nKS0π+)=[1.82±0.23(stat)±0.11(syst)]%. A comparison to B[Λc+→p(K̄π)0] provides an important test of isospin symmetry and final state interactions.

KW - CHARMED BARYONS

KW - DECAYS

KW - RADIATIVE-CORRECTIONS

U2 - 10.1103/PhysRevLett.118.112001

DO - 10.1103/PhysRevLett.118.112001

M3 - Article

SN - 0031-9007

VL - 118

JO - Physical Review Letters

JF - Physical Review Letters

IS - 11

M1 - 112001

ER -