Observation of Λ-H-4 hyperhydrogen by decay-pion spectroscopy in electron scattering

Autoren

A Esser
S Nagao
F Schulz
P Achenbach
C Ayerbe Gayoso
R Boehm
O Borodina
D Bosnar
V Bozkurt
L Debenjak
MO Distler
I Friscic
Y Fujii
T Gogami
O Hashimoto
S Hirose
H Kanda
M Kaneta
E Kim
Y Kohl
J Kusaka
A Margaryan
H Merkel
M Mihovilovic
U Mueller
SN Nakamura
J Pochodzalla
C Rappold
J Reinhold
TR Saito
A Sanchez Lorente
S Sanchez Majos
BS Schlimme
M Schoth
C Sfienti
S Sirca
L Tang
M Thiel
K Tsukada
A Weber
K Yoshida

Autoren-URL

https://www.webofscience.com/api/gateway?GWVersion=2&SrcApp=fis-test-1&SrcAuth=WosAPI&KeyUT=WOS:000355833300002&DestLinkType=FullRecord&DestApp=WOS_CPL

DOI

10.1103/PhysRevLett.114.232501

eISSN

1079-7114

Externe Identifier

Clarivate Analytics Document Solution ID: CJ9OZ
PubMed Identifier: 26196794

ISSN

0031-9007

Ausgabe der Veröffentlichung

23

Zeitschrift

PHYSICAL REVIEW LETTERS

Artikelnummer

ARTN 232501

Datum der Veröffentlichung

2015

Status

Published

Titel

Observation of <sub>Λ</sub><SUP>4</SUP>H Hyperhydrogen by Decay-Pion Spectroscopy in Electron Scattering

Sub types

Article

Ausgabe der Zeitschrift

114

Data source: Web of Science (Lite)

Autoren

A Esser
S Nagao
F Schulz
P Achenbach
C Ayerbe Gayoso
R Böhm
O Borodina
D Bosnar
V Bozkurt
L Debenjak
MO Distler
I Friščić
Y Fujii
T Gogami
O Hashimoto
S Hirose
H Kanda
M Kaneta
E Kim
Y Kohl
J Kusaka
A Margaryan
H Merkel
M Mihovilovič
U Müller
SN Nakamura
J Pochodzalla
C Rappold
J Reinhold
TR Saito
A Sanchez Lorente
S Sánchez Majos
BS Schlimme
M Schoth
C Sfienti
S Širca
L Tang
M Thiel
K Tsukada
A Weber
K Yoshida

DOI

10.1103/physrevlett.114.232501

eISSN

1079-7114

ISSN

0031-9007

Ausgabe der Veröffentlichung

23

Zeitschrift

Physical Review Letters

Sprache

en

Artikelnummer

232501

Online publication date

2015

Status

Published online

Herausgeber

American Physical Society (APS)

Herausgeber URL

http://dx.doi.org/10.1103/physrevlett.114.232501

Datum der Datenerfassung

2017

Titel

Observation of<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:mmultiscripts><mml:mrow><mml:mi mathvariant="normal">H</mml:mi></mml:mrow><mml:mprescripts /><mml:mrow><mml:mi mathvariant="normal">Λ</mml:mi></mml:mrow><mml:mrow><mml:mn>4</mml:mn></mml:mrow></mml:mmultiscripts></mml:mrow></mml:math>Hyperhydrogen by Decay-Pion Spectroscopy in Electron Scattering

Ausgabe der Zeitschrift

114

Data source: Crossref

Abstract

At the Mainz Microtron MAMI, the first high-resolution pion spectroscopy from decays of strange systems was performed by electron scattering off a (9)Be target in order to study the Λ binding energy of light hypernuclei. Positively charged kaons were detected by a short-orbit spectrometer with a broad momentum acceptance at 0° forward angles with respect to the beam, efficiently tagging the production of strangeness in the target nucleus. Coincidentally, negatively charged decay pions were detected by two independent high-resolution spectrometers. About 10(3) pionic weak decays of hyperfragments and hyperons were observed. The pion momentum distribution shows a monochromatic peak at pπ≈133 MeV/c, corresponding to the unique signature for the two-body decay of hyperhydrogen Λ(4)H→(4)He+π(-), stopped inside the target. Its Λ binding energy was determined to be BΛ=2.12±0.01 (stat)±0.09 (syst)MeV with respect to the (3)H+Λ mass.

Addresses

Institut für Kernphysik, Johannes Gutenberg-Universität, D-55099 Mainz, Germany.

Autoren

A Esser
S Nagao
F Schulz
P Achenbach
C Ayerbe Gayoso
R Böhm
O Borodina
D Bosnar
V Bozkurt
L Debenjak
MO Distler
I Friščić
Y Fujii
T Gogami
O Hashimoto
S Hirose
H Kanda
M Kaneta
E Kim
Y Kohl
J Kusaka
A Margaryan
H Merkel
M Mihovilovič
U Müller
SN Nakamura
J Pochodzalla
C Rappold
J Reinhold
TR Saito
A Sanchez Lorente
S Sánchez Majos
BS Schlimme
M Schoth
C Sfienti
S Širca
L Tang
M Thiel
K Tsukada
A Weber
K Yoshida
A1 Collaboration

DOI

10.1103/physrevlett.114.232501

eISSN

1079-7114

Externe Identifier

PubMed Identifier: 26196794

Funding acknowledgements

Deutsche Forschungsgemeinschaft: SFB 1044
Japan Society for the Promotion of Science:
Carl-Zeiss-Stiftung:
European Community Research Infrastructure Integrating Activity:
U.S. Department of Energy: DEFG02-97ER41047

Open access

false

ISSN

0031-9007

Ausgabe der Veröffentlichung

23

Zeitschrift

Physical review letters

Schlüsselwörter

A1 Collaboration

Sprache

eng

Medium

Print-Electronic

Online publication date

2015

Paginierung

232501

Datum der Veröffentlichung

2015

Status

Published

Datum der Datenerfassung

2015

Titel

Observation of Λ(4)H Hyperhydrogen by Decay-Pion Spectroscopy in Electron Scattering.

Sub types

Journal Article

Ausgabe der Zeitschrift

114

Data source: Europe PubMed Central

Abstract

At the Mainz Microtron MAMI, the first high-resolution pion spectroscopy from decays of strange systems was performed by electron scattering off a (9)Be target in order to study the Λ binding energy of light hypernuclei. Positively charged kaons were detected by a short-orbit spectrometer with a broad momentum acceptance at 0° forward angles with respect to the beam, efficiently tagging the production of strangeness in the target nucleus. Coincidentally, negatively charged decay pions were detected by two independent high-resolution spectrometers. About 10(3) pionic weak decays of hyperfragments and hyperons were observed. The pion momentum distribution shows a monochromatic peak at pπ≈133 MeV/c, corresponding to the unique signature for the two-body decay of hyperhydrogen Λ(4)H→(4)He+π(-), stopped inside the target. Its Λ binding energy was determined to be BΛ=2.12±0.01 (stat)±0.09 (syst)MeV with respect to the (3)H+Λ mass.

Autoren

A Esser
S Nagao
F Schulz
P Achenbach
C Ayerbe Gayoso
R Böhm
O Borodina
D Bosnar
V Bozkurt
L Debenjak
MO Distler
I Friščić
Y Fujii
T Gogami
O Hashimoto
S Hirose
H Kanda
M Kaneta
E Kim
Y Kohl
J Kusaka
A Margaryan
H Merkel
M Mihovilovič
U Müller
SN Nakamura
J Pochodzalla
C Rappold
J Reinhold
TR Saito
A Sanchez Lorente
S Sánchez Majos
BS Schlimme
M Schoth
C Sfienti
S Širca
L Tang
M Thiel
K Tsukada
A Weber
K Yoshida
A1 Collaboration

Autoren-URL

https://www.ncbi.nlm.nih.gov/pubmed/26196794

DOI

10.1103/PhysRevLett.114.232501

eISSN

1079-7114

Ausgabe der Veröffentlichung

23

Zeitschrift

Phys Rev Lett

Sprache

eng

Country

United States

Paginierung

232501

Datum der Veröffentlichung

2015

Status

Published

Datum, an dem der Datensatz öffentlich gemacht wurde

2015

Titel

Observation of Λ(4)H Hyperhydrogen by Decay-Pion Spectroscopy in Electron Scattering.

Sub types

Journal Article

Ausgabe der Zeitschrift

114

Data source: PubMed

Abstract

At the Mainz Microtron MAMI, the first high-resolution pion spectroscopy from decays of strange systems was performed by electron scattering off a Be-9 target in order to study the ground-state masses of Lambda-hypernuclei. Positively charged kaons were detected by a short-orbit spectrometer with a broad momentum acceptance at zero degree forward angles with respect to the beam, efficiently tagging the production of strangeness in the target nucleus. In coincidence, negatively charged decay-pions were detected by two independent high-resolution spectrometers. About 10^3 pionic weak decays of hyperfragments and hyperons were observed. The pion momentum distribution shows a monochromatic peak at p_pi ~ 133 MeV/c, corresponding to the unique signature for the two-body decay of hyperhydrogen Lambda H-4 -> He-4 + pi-, stopped inside the target. Its binding energy was determined to be B_Lambda = 2.12 +- 0.01 (stat.) +- 0.09 (syst.) MeV with respect to the H-3 + Lambda mass.

Autoren

A Esser
S Nagao
F Schulz
P Achenbach
C Ayerbe Gayoso
R Böhm
O Borodina
D Bosnar
V Bozkurt
L Debenjak
MO Distler
I Friščić
Y Fujii
T Gogami
O Hashimoto
S Hirose
H Kanda
M Kaneta
E Kim
Y Kohl
J Kusaka
A Margaryan
H Merkel
M Mihovilovič
U Müller
SN Nakamura
J Pochodzalla
C Rappold
J Reinhold
TR Saito
A Sanchez Lorente
S Sánchez Majos
BS Schlimme
M Schoth
C Sfienti
S Širca
L Tang
M Thiel
K Tsukada
A Weber
K Yoshida

Autoren-URL

http://arxiv.org/abs/1501.06823v2

Zeitschrift

Phys. Rev. Lett.

Schlüsselwörter

nucl-ex
nucl-ex

Paginierung

232501

Datum der Veröffentlichung

2015

Herausgeber URL

http://dx.doi.org/10.1103/PhysRevLett.114.232501

Datum der Datenerfassung

2015

Datum, an dem der Datensatz öffentlich gemacht wurde

2015

Titel

Observation of Lambda H-4 hyperhydrogen by decay-pion spectroscopy in electron scattering

Ausgabe der Zeitschrift

114

Files

1501.06823v2.pdf

Data source: arXiv

Observation of Λ-H-4 hyperhydrogen by decay-pion spectroscopy in electron scattering

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