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Observation of a fine structure in e+e− → hadrons production at the nucleon-antinucleon threshold. / CMD-3 Collaboration ; Шемякин, Дмитрий Николаевич.

In: Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics, Vol. 794, 10.07.2019, p. 64-68.

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

Harvard

CMD-3 Collaboration & Шемякин, ДН 2019, 'Observation of a fine structure in e+e− → hadrons production at the nucleon-antinucleon threshold', Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics, vol. 794, pp. 64-68. https://doi.org/10.1016/j.physletb.2019.05.032

APA

CMD-3 Collaboration, & Шемякин, Д. Н. (2019). Observation of a fine structure in e+e− → hadrons production at the nucleon-antinucleon threshold. Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics, 794, 64-68. https://doi.org/10.1016/j.physletb.2019.05.032

Vancouver

CMD-3 Collaboration, Шемякин ДН. Observation of a fine structure in e+e− → hadrons production at the nucleon-antinucleon threshold. Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics. 2019 Jul 10;794:64-68. doi: 10.1016/j.physletb.2019.05.032

Author

CMD-3 Collaboration ; Шемякин, Дмитрий Николаевич. / Observation of a fine structure in e+e− → hadrons production at the nucleon-antinucleon threshold. In: Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics. 2019 ; Vol. 794. pp. 64-68.

BibTeX

@article{fc1c656147bb43f5a319c8bae3961015,
title = "Observation of a fine structure in e+e− → hadrons production at the nucleon-antinucleon threshold",
abstract = "A study of hadron production at the nucleon-antinucleon threshold has been performed with the CMD-3 detector at the VEPP-2000 e+e− collider. The very fast rise with about 1 MeV width has been observed in the e+e−→pp¯ cross section. A sharp drop in the e+e−→3(π+π−)cross section has been confirmed and found to have a less than 2 MeV width, in agreement with the observed fast rise of the e+e−→pp¯ cross section. For the first time a similar sharp drop is demonstrated in the e+e−→K+K−π+π− cross section. The behavior of the e+e−→3(π+π−),K+K−π+π− cross sections cannot be explained by an interference of any resonance amplitude with continuum, therefore this phenomenon cannot be due to a narrow near-threshold resonance. No such structure has been observed in the e+e−→2(π+π−)cross section.",
keywords = "NARROW DIP STRUCTURE, CROSS-SECTION, 1.9 GEV/C(2), ANNIHILATION, ENERGY, P(P)OVER-BAR",
author = "{CMD-3 Collaboration} and Akhmetshin, {R. R.} and Amirkhanov, {A. N.} and Anisenkov, {A. V.} and Aulchenko, {V. M.} and Banzarov, {V. Sh} and Bashtovoy, {N. S.} and Berkaev, {D. E.} and Bondar, {A. E.} and Bragin, {A. V.} and Eidelman, {S. I.} and Epifanov, {D. A.} and Epshteyn, {L. B.} and Erofeev, {A. L.} and Fedotovich, {G. V.} and Gayazov, {S. E.} and Grebenuk, {A. A.} and Gribanov, {S. S.} and Grigoriev, {D. N.} and Ignatov, {F. V.} and Ivanov, {V. L.} and Karpov, {S. V.} and Kazanin, {V. F.} and Koop, {I. A.} and Kirpotin, {A. N.} and Korobov, {A. A.} and Kozyrev, {A. N.} and Kozyrev, {E. A.} and Krokovny, {P. P.} and Kuzmenko, {A. E.} and Kuzmin, {A. S.} and Logashenko, {I. B.} and Lukin, {P. A.} and Mikhailov, {K. Yu} and Okhapkin, {V. S.} and Otboev, {A. V.} and Pestov, {Yu N.} and Popov, {A. S.} and Razuvaev, {G. P.} and Ruban, {A. A.} and Ryskulov, {N. M.} and Ryzhenenkov, {A. E.} and Senchenko, {A. I.} and Shatunov, {Yu M.} and Shemyakin, {D. N.} and Shwartz, {B. A.} and Shwartz, {D. B.} and Solodov, {E. P.} and Talyshev, {A. A.} and Tolmachev, {S. S.} and Yudin, {Yu V.} and Шемякин, {Дмитрий Николаевич}",
year = "2019",
month = jul,
day = "10",
doi = "10.1016/j.physletb.2019.05.032",
language = "English",
volume = "794",
pages = "64--68",
journal = "Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics",
issn = "0370-2693",
publisher = "Elsevier",

}

RIS

TY - JOUR

T1 - Observation of a fine structure in e+e− → hadrons production at the nucleon-antinucleon threshold

AU - CMD-3 Collaboration

AU - Akhmetshin, R. R.

AU - Amirkhanov, A. N.

AU - Anisenkov, A. V.

AU - Aulchenko, V. M.

AU - Banzarov, V. Sh

AU - Bashtovoy, N. S.

AU - Berkaev, D. E.

AU - Bondar, A. E.

AU - Bragin, A. V.

AU - Eidelman, S. I.

AU - Epifanov, D. A.

AU - Epshteyn, L. B.

AU - Erofeev, A. L.

AU - Fedotovich, G. V.

AU - Gayazov, S. E.

AU - Grebenuk, A. A.

AU - Gribanov, S. S.

AU - Grigoriev, D. N.

AU - Ignatov, F. V.

AU - Ivanov, V. L.

AU - Karpov, S. V.

AU - Kazanin, V. F.

AU - Koop, I. A.

AU - Kirpotin, A. N.

AU - Korobov, A. A.

AU - Kozyrev, A. N.

AU - Kozyrev, E. A.

AU - Krokovny, P. P.

AU - Kuzmenko, A. E.

AU - Kuzmin, A. S.

AU - Logashenko, I. B.

AU - Lukin, P. A.

AU - Mikhailov, K. Yu

AU - Okhapkin, V. S.

AU - Otboev, A. V.

AU - Pestov, Yu N.

AU - Popov, A. S.

AU - Razuvaev, G. P.

AU - Ruban, A. A.

AU - Ryskulov, N. M.

AU - Ryzhenenkov, A. E.

AU - Senchenko, A. I.

AU - Shatunov, Yu M.

AU - Shemyakin, D. N.

AU - Shwartz, B. A.

AU - Shwartz, D. B.

AU - Solodov, E. P.

AU - Talyshev, A. A.

AU - Tolmachev, S. S.

AU - Yudin, Yu V.

AU - Шемякин, Дмитрий Николаевич

PY - 2019/7/10

Y1 - 2019/7/10

N2 - A study of hadron production at the nucleon-antinucleon threshold has been performed with the CMD-3 detector at the VEPP-2000 e+e− collider. The very fast rise with about 1 MeV width has been observed in the e+e−→pp¯ cross section. A sharp drop in the e+e−→3(π+π−)cross section has been confirmed and found to have a less than 2 MeV width, in agreement with the observed fast rise of the e+e−→pp¯ cross section. For the first time a similar sharp drop is demonstrated in the e+e−→K+K−π+π− cross section. The behavior of the e+e−→3(π+π−),K+K−π+π− cross sections cannot be explained by an interference of any resonance amplitude with continuum, therefore this phenomenon cannot be due to a narrow near-threshold resonance. No such structure has been observed in the e+e−→2(π+π−)cross section.

AB - A study of hadron production at the nucleon-antinucleon threshold has been performed with the CMD-3 detector at the VEPP-2000 e+e− collider. The very fast rise with about 1 MeV width has been observed in the e+e−→pp¯ cross section. A sharp drop in the e+e−→3(π+π−)cross section has been confirmed and found to have a less than 2 MeV width, in agreement with the observed fast rise of the e+e−→pp¯ cross section. For the first time a similar sharp drop is demonstrated in the e+e−→K+K−π+π− cross section. The behavior of the e+e−→3(π+π−),K+K−π+π− cross sections cannot be explained by an interference of any resonance amplitude with continuum, therefore this phenomenon cannot be due to a narrow near-threshold resonance. No such structure has been observed in the e+e−→2(π+π−)cross section.

KW - NARROW DIP STRUCTURE

KW - CROSS-SECTION

KW - 1.9 GEV/C(2)

KW - ANNIHILATION

KW - ENERGY

KW - P(P)OVER-BAR

UR - http://www.scopus.com/inward/record.url?scp=85067980941&partnerID=8YFLogxK

U2 - 10.1016/j.physletb.2019.05.032

DO - 10.1016/j.physletb.2019.05.032

M3 - Article

AN - SCOPUS:85067980941

VL - 794

SP - 64

EP - 68

JO - Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics

JF - Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics

SN - 0370-2693

ER -

ID: 20670620