Measurement of the decay η′ →π0π0η at MAMI

P. Adlarson; F. Afzal; Z. Ahmed; C. S. Akondi; J. R.M. Annand; H. J. Arends; R. Beck; N. Borisov; A. Braghieri; W. J. Briscoe; F. Cividini; C. Collicott; S. Costanza; A. Denig; E. J. Downie; M. Dieterle; M. I. Ferretti Bondy; S. Gardner; S. Garni; D. I. Glazier; D. Glowa; W. Gradl; G. Gurevich; D. J. Hamilton; D. Hornidge; G. M. Huber; A. Käser; V. L. Kashevarov; S. Kay; I. Keshelashvili; R. Kondratiev; M. Korolija; B. Krusche; A. Lazarev; J. Linturi; K. Livingston; I. J.D. Macgregor; D. M. Manley; P. P. Martel; J. C. McGeorge; D. G. Middleton; R. Miskimen; A. Mushkarenkov; A. Neganov; A. Neiser; M. Oberle; M. Ostrick; P. Ott; D. P. Watts; (A2 Collaboration at MAMI); Dominik Werthmüller

doi:10.1103/PhysRevD.98.012001

Measurement of the decay η′ →π0π0η at MAMI

P. Adlarson^*, F. Afzal, Z. Ahmed, C. S. Akondi, J. R.M. Annand, H. J. Arends, R. Beck, N. Borisov, A. Braghieri, W. J. Briscoe, F. Cividini, C. Collicott, S. Costanza, A. Denig, E. J. Downie, M. Dieterle, M. I. Ferretti Bondy, S. Gardner, S. Garni, D. I. GlazierD. Glowa, W. Gradl, G. Gurevich, D. J. Hamilton, D. Hornidge, G. M. Huber, A. Käser, V. L. Kashevarov, S. Kay, I. Keshelashvili, R. Kondratiev, M. Korolija, B. Krusche, A. Lazarev, J. Linturi, K. Livingston, I. J.D. Macgregor, D. M. Manley, P. P. Martel, J. C. McGeorge, D. G. Middleton, R. Miskimen, A. Mushkarenkov, A. Neganov, A. Neiser, M. Oberle, M. Ostrick, P. Ott, D. P. Watts, (A2 Collaboration at MAMI), Dominik Werthmüller

^*Corresponding author for this work

Physics

Research output: Contribution to journal › Article › peer-review

Abstract

An experimental study of the η′→π0π0η→6γ decay has been conducted with the best up-to-date statistical accuracy, by measuring η′ mesons produced in the γp→η′p reaction with the A2 tagged-photon facility at the Mainz Microtron, MAMI. The results obtained for the standard parametrization of the η′→π0π0η matrix element are consistent with the most recent results for η′→ππη decays, but have smaller uncertainties. The available statistics and experimental resolution allowed, for the first time, an observation of a structure below the π+π- mass threshold, the magnitude and sign of which, checked within the framework of the nonrelativistic effective-field theory, demonstrated good agreement with the cusp that was predicted based on the ππ scattering length combination, a0-a2, extracted from K→3π decays.

Original language	English
Article number	012001
Journal	Physical Review D
Volume	98
Issue number	1
DOIs	https://doi.org/10.1103/PhysRevD.98.012001
Publication status	Published - 1 Jul 2018

Bibliographical note

Access to Document

10.1103/PhysRevD.98.012001

PhysRevD.98.012001-1
© 2018, The Author(s).
Final published version, 634 KBLicence: CC BY

Cite this

Adlarson, P., Afzal, F., Ahmed, Z., Akondi, C. S., Annand, J. R. M., Arends, H. J., Beck, R., Borisov, N., Braghieri, A., Briscoe, W. J., Cividini, F., Collicott, C., Costanza, S., Denig, A., Downie, E. J., Dieterle, M., Ferretti Bondy, M. I., Gardner, S., Garni, S., ... Werthmüller, D. (2018). Measurement of the decay η′ →π0π0η at MAMI. Physical Review D, 98(1), Article 012001. https://doi.org/10.1103/PhysRevD.98.012001

@article{508a09ee3fdf4acb85c4c389b39cbb74,

title = "Measurement of the decay η′ →π0π0η at MAMI",

abstract = "An experimental study of the η′→π0π0η→6γ decay has been conducted with the best up-to-date statistical accuracy, by measuring η′ mesons produced in the γp→η′p reaction with the A2 tagged-photon facility at the Mainz Microtron, MAMI. The results obtained for the standard parametrization of the η′→π0π0η matrix element are consistent with the most recent results for η′→ππη decays, but have smaller uncertainties. The available statistics and experimental resolution allowed, for the first time, an observation of a structure below the π+π- mass threshold, the magnitude and sign of which, checked within the framework of the nonrelativistic effective-field theory, demonstrated good agreement with the cusp that was predicted based on the ππ scattering length combination, a0-a2, extracted from K→3π decays.",

author = "P. Adlarson and F. Afzal and Z. Ahmed and Akondi, {C. S.} and Annand, {J. R.M.} and Arends, {H. J.} and R. Beck and N. Borisov and A. Braghieri and Briscoe, {W. J.} and F. Cividini and C. Collicott and S. Costanza and A. Denig and Downie, {E. J.} and M. Dieterle and {Ferretti Bondy}, {M. I.} and S. Gardner and S. Garni and Glazier, {D. I.} and D. Glowa and W. Gradl and G. Gurevich and Hamilton, {D. J.} and D. Hornidge and Huber, {G. M.} and A. K{\"a}ser and Kashevarov, {V. L.} and S. Kay and I. Keshelashvili and R. Kondratiev and M. Korolija and B. Krusche and A. Lazarev and J. Linturi and K. Livingston and Macgregor, {I. J.D.} and Manley, {D. M.} and Martel, {P. P.} and McGeorge, {J. C.} and Middleton, {D. G.} and R. Miskimen and A. Mushkarenkov and A. Neganov and A. Neiser and M. Oberle and M. Ostrick and P. Ott and Watts, {D. P.} and {(A2 Collaboration at MAMI)} and Dominik Werthm{\"u}ller",

note = "{\textcopyright} 2018, The Author(s). ",

year = "2018",

month = jul,

day = "1",

doi = "10.1103/PhysRevD.98.012001",

language = "English",

volume = "98",

journal = "Physical Review D",

issn = "2470-0010",

publisher = "American Institute of Physics",

number = "1",

}

Adlarson, P, Afzal, F, Ahmed, Z, Akondi, CS, Annand, JRM, Arends, HJ, Beck, R, Borisov, N, Braghieri, A, Briscoe, WJ, Cividini, F, Collicott, C, Costanza, S, Denig, A, Downie, EJ, Dieterle, M, Ferretti Bondy, MI, Gardner, S, Garni, S, Glazier, DI, Glowa, D, Gradl, W, Gurevich, G, Hamilton, DJ, Hornidge, D, Huber, GM, Käser, A, Kashevarov, VL, Kay, S, Keshelashvili, I, Kondratiev, R, Korolija, M, Krusche, B, Lazarev, A, Linturi, J, Livingston, K, Macgregor, IJD, Manley, DM, Martel, PP, McGeorge, JC, Middleton, DG, Miskimen, R, Mushkarenkov, A, Neganov, A, Neiser, A, Oberle, M, Ostrick, M, Ott, P, Watts, DP, (A2 Collaboration at MAMI) & Werthmüller, D 2018, 'Measurement of the decay η′ →π0π0η at MAMI', Physical Review D, vol. 98, no. 1, 012001. https://doi.org/10.1103/PhysRevD.98.012001

TY - JOUR

T1 - Measurement of the decay η′ →π0π0η at MAMI

AU - Adlarson, P.

AU - Afzal, F.

AU - Ahmed, Z.

AU - Akondi, C. S.

AU - Annand, J. R.M.

AU - Arends, H. J.

AU - Beck, R.

AU - Borisov, N.

AU - Braghieri, A.

AU - Briscoe, W. J.

AU - Cividini, F.

AU - Collicott, C.

AU - Costanza, S.

AU - Denig, A.

AU - Downie, E. J.

AU - Dieterle, M.

AU - Ferretti Bondy, M. I.

AU - Gardner, S.

AU - Garni, S.

AU - Glazier, D. I.

AU - Glowa, D.

AU - Gradl, W.

AU - Gurevich, G.

AU - Hamilton, D. J.

AU - Hornidge, D.

AU - Huber, G. M.

AU - Käser, A.

AU - Kashevarov, V. L.

AU - Kay, S.

AU - Keshelashvili, I.

AU - Kondratiev, R.

AU - Korolija, M.

AU - Krusche, B.

AU - Lazarev, A.

AU - Linturi, J.

AU - Livingston, K.

AU - Macgregor, I. J.D.

AU - Manley, D. M.

AU - Martel, P. P.

AU - McGeorge, J. C.

AU - Middleton, D. G.

AU - Miskimen, R.

AU - Mushkarenkov, A.

AU - Neganov, A.

AU - Neiser, A.

AU - Oberle, M.

AU - Ostrick, M.

AU - Ott, P.

AU - Watts, D. P.

AU - (A2 Collaboration at MAMI)

AU - Werthmüller, Dominik

PY - 2018/7/1

Y1 - 2018/7/1

N2 - An experimental study of the η′→π0π0η→6γ decay has been conducted with the best up-to-date statistical accuracy, by measuring η′ mesons produced in the γp→η′p reaction with the A2 tagged-photon facility at the Mainz Microtron, MAMI. The results obtained for the standard parametrization of the η′→π0π0η matrix element are consistent with the most recent results for η′→ππη decays, but have smaller uncertainties. The available statistics and experimental resolution allowed, for the first time, an observation of a structure below the π+π- mass threshold, the magnitude and sign of which, checked within the framework of the nonrelativistic effective-field theory, demonstrated good agreement with the cusp that was predicted based on the ππ scattering length combination, a0-a2, extracted from K→3π decays.

AB - An experimental study of the η′→π0π0η→6γ decay has been conducted with the best up-to-date statistical accuracy, by measuring η′ mesons produced in the γp→η′p reaction with the A2 tagged-photon facility at the Mainz Microtron, MAMI. The results obtained for the standard parametrization of the η′→π0π0η matrix element are consistent with the most recent results for η′→ππη decays, but have smaller uncertainties. The available statistics and experimental resolution allowed, for the first time, an observation of a structure below the π+π- mass threshold, the magnitude and sign of which, checked within the framework of the nonrelativistic effective-field theory, demonstrated good agreement with the cusp that was predicted based on the ππ scattering length combination, a0-a2, extracted from K→3π decays.

UR - http://www.scopus.com/inward/record.url?scp=85051017860&partnerID=8YFLogxK

U2 - 10.1103/PhysRevD.98.012001

DO - 10.1103/PhysRevD.98.012001

M3 - Article

AN - SCOPUS:85051017860

SN - 2470-0010

VL - 98

JO - Physical Review D

JF - Physical Review D

IS - 1

M1 - 012001

ER -

Measurement of the decay η′ →π0π0η at MAMI

Abstract

Bibliographical note

Access to Document

Other files and links

Cite this