Evidence for heavy hyperhydrogen HΛ6

M. Agnello; L. Benussi; M. Bertani; H. C. Bhang; G. Bonomi; E. Botta; M. Bregant; T. Bressani; S. Bufalino; L. Busso; D. Calvo; P. Camerini; B. Dalena; F. De Mori; G. D'Erasmo; F. L. Fabbri; A. Feliciello; A. Filippi; E. M. Fiore; A. Fontana; H. Fujioka; P. Genova; P. Gianotti; N. Grion; V. Lucherini; S. Marcello; N. Mirfakhrai; F. Moia; O. Morra; T. Nagae; H. Outa; A. Pantaleo; V. Paticchio; S. Piano; R. Rui; G. Simonetti; R. Wheadon; A. Zenoni; A. Gal

doi:10.1103/PhysRevLett.108.042501

Evidence for heavy hyperhydrogen HΛ6

M. Agnello^*, L. Benussi, M. Bertani, H. C. Bhang, G. Bonomi, E. Botta, M. Bregant, T. Bressani, S. Bufalino, L. Busso, D. Calvo, P. Camerini, B. Dalena, F. De Mori, G. D'Erasmo, F. L. Fabbri, A. Feliciello, A. Filippi, E. M. Fiore, A. FontanaH. Fujioka, P. Genova, P. Gianotti, N. Grion, V. Lucherini, S. Marcello, N. Mirfakhrai, F. Moia, O. Morra, T. Nagae, H. Outa, A. Pantaleo, V. Paticchio, S. Piano, R. Rui, G. Simonetti, R. Wheadon, A. Zenoni, A. Gal

^*Corresponding author for this work

Racah Institute of Physics

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Abstract

Evidence for the neutron-rich hypernucleus HΛ6 is presented from the FINUDA experiment at DAΦNE, Frascati, studying (π ⁺,π ^-) pairs in coincidence from the Kstop- +Li6→HΛ6+π ⁺ production reaction followed by HΛ6→He6+π ^- weak decay. The production rate of HΛ6 undergoing this two-body π ^- decay is determined to be (2.9±2.0)×10 ^-6/Kstop-. Its binding energy, evaluated jointly from production and decay, is B _Λ(HΛ6)=(4. 0±1.1)MeV with respect to H5+Λ. A systematic difference of (0.98±0.74)MeV between B _Λ values derived separately from decay and from production is tentatively assigned to the HΛ6 0g.s.+→1 ⁺ excitation.

Original language	English
Article number	042501
Journal	Physical Review Letters
Volume	108
Issue number	4
DOIs	https://doi.org/10.1103/PhysRevLett.108.042501
State	Published - 24 Jan 2012

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Agnello, M., Benussi, L., Bertani, M., Bhang, H. C., Bonomi, G., Botta, E., Bregant, M., Bressani, T., Bufalino, S., Busso, L., Calvo, D., Camerini, P., Dalena, B., De Mori, F., D'Erasmo, G., Fabbri, F. L., Feliciello, A., Filippi, A., Fiore, E. M., ... Gal, A. (2012). Evidence for heavy hyperhydrogen HΛ6. Physical Review Letters, 108(4), Article 042501. https://doi.org/10.1103/PhysRevLett.108.042501

@article{d3655978db904577b6a66ed8acd42aab,

title = "Evidence for heavy hyperhydrogen HΛ6",

abstract = "Evidence for the neutron-rich hypernucleus HΛ6 is presented from the FINUDA experiment at DAΦNE, Frascati, studying (π +,π -) pairs in coincidence from the Kstop- +Li6→HΛ6+π + production reaction followed by HΛ6→He6+π - weak decay. The production rate of HΛ6 undergoing this two-body π - decay is determined to be (2.9±2.0)×10 -6/Kstop-. Its binding energy, evaluated jointly from production and decay, is B Λ(HΛ6)=(4. 0±1.1)MeV with respect to H5+Λ. A systematic difference of (0.98±0.74)MeV between B Λ values derived separately from decay and from production is tentatively assigned to the HΛ6 0g.s.+→1 + excitation.",

author = "M. Agnello and L. Benussi and M. Bertani and Bhang, {H. C.} and G. Bonomi and E. Botta and M. Bregant and T. Bressani and S. Bufalino and L. Busso and D. Calvo and P. Camerini and B. Dalena and {De Mori}, F. and G. D'Erasmo and Fabbri, {F. L.} and A. Feliciello and A. Filippi and Fiore, {E. M.} and A. Fontana and H. Fujioka and P. Genova and P. Gianotti and N. Grion and V. Lucherini and S. Marcello and N. Mirfakhrai and F. Moia and O. Morra and T. Nagae and H. Outa and A. Pantaleo and V. Paticchio and S. Piano and R. Rui and G. Simonetti and R. Wheadon and A. Zenoni and A. Gal",

year = "2012",

month = jan,

day = "24",

doi = "10.1103/PhysRevLett.108.042501",

language = "אנגלית",

volume = "108",

journal = "Physical Review Letters",

issn = "0031-9007",

publisher = "American Physical Society",

number = "4",

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Agnello, M, Benussi, L, Bertani, M, Bhang, HC, Bonomi, G, Botta, E, Bregant, M, Bressani, T, Bufalino, S, Busso, L, Calvo, D, Camerini, P, Dalena, B, De Mori, F, D'Erasmo, G, Fabbri, FL, Feliciello, A, Filippi, A, Fiore, EM, Fontana, A, Fujioka, H, Genova, P, Gianotti, P, Grion, N, Lucherini, V, Marcello, S, Mirfakhrai, N, Moia, F, Morra, O, Nagae, T, Outa, H, Pantaleo, A, Paticchio, V, Piano, S, Rui, R, Simonetti, G, Wheadon, R, Zenoni, A & Gal, A 2012, 'Evidence for heavy hyperhydrogen HΛ6', Physical Review Letters, vol. 108, no. 4, 042501. https://doi.org/10.1103/PhysRevLett.108.042501

TY - JOUR

T1 - Evidence for heavy hyperhydrogen HΛ6

AU - Agnello, M.

AU - Benussi, L.

AU - Bertani, M.

AU - Bhang, H. C.

AU - Bonomi, G.

AU - Botta, E.

AU - Bregant, M.

AU - Bressani, T.

AU - Bufalino, S.

AU - Busso, L.

AU - Calvo, D.

AU - Camerini, P.

AU - Dalena, B.

AU - De Mori, F.

AU - D'Erasmo, G.

AU - Fabbri, F. L.

AU - Feliciello, A.

AU - Filippi, A.

AU - Fiore, E. M.

AU - Fontana, A.

AU - Fujioka, H.

AU - Genova, P.

AU - Gianotti, P.

AU - Grion, N.

AU - Lucherini, V.

AU - Marcello, S.

AU - Mirfakhrai, N.

AU - Moia, F.

AU - Morra, O.

AU - Nagae, T.

AU - Outa, H.

AU - Pantaleo, A.

AU - Paticchio, V.

AU - Piano, S.

AU - Rui, R.

AU - Simonetti, G.

AU - Wheadon, R.

AU - Zenoni, A.

AU - Gal, A.

PY - 2012/1/24

Y1 - 2012/1/24

N2 - Evidence for the neutron-rich hypernucleus HΛ6 is presented from the FINUDA experiment at DAΦNE, Frascati, studying (π +,π -) pairs in coincidence from the Kstop- +Li6→HΛ6+π + production reaction followed by HΛ6→He6+π - weak decay. The production rate of HΛ6 undergoing this two-body π - decay is determined to be (2.9±2.0)×10 -6/Kstop-. Its binding energy, evaluated jointly from production and decay, is B Λ(HΛ6)=(4. 0±1.1)MeV with respect to H5+Λ. A systematic difference of (0.98±0.74)MeV between B Λ values derived separately from decay and from production is tentatively assigned to the HΛ6 0g.s.+→1 + excitation.

AB - Evidence for the neutron-rich hypernucleus HΛ6 is presented from the FINUDA experiment at DAΦNE, Frascati, studying (π +,π -) pairs in coincidence from the Kstop- +Li6→HΛ6+π + production reaction followed by HΛ6→He6+π - weak decay. The production rate of HΛ6 undergoing this two-body π - decay is determined to be (2.9±2.0)×10 -6/Kstop-. Its binding energy, evaluated jointly from production and decay, is B Λ(HΛ6)=(4. 0±1.1)MeV with respect to H5+Λ. A systematic difference of (0.98±0.74)MeV between B Λ values derived separately from decay and from production is tentatively assigned to the HΛ6 0g.s.+→1 + excitation.

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DO - 10.1103/PhysRevLett.108.042501

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SN - 0031-9007

VL - 108

JO - Physical Review Letters

JF - Physical Review Letters

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Evidence for heavy hyperhydrogen HΛ6

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