相关论文: New experimental data for the decays $\phi\to\mu^+…

Measurement of the decay phi->mu+mu-

The process e^+e^- ->mu^+mu^- has been studied with SND detector at VEPP-2M e^+e^- collider in the vicinity of phi(1020) resonance. The product of branching ratios of phi meson into leptons \sqrt{B(phi->mu^+mu^-) B(phi->…

高能物理 - 实验 · 物理学 2019-08-17 M. N. Achasov , S. E. Baru , A. V. Bozhenok , D. A. Bukin , S. V. Burdin , T. V. Dimova , V. P. Druzhinin , M. S. Dubrovin , I. A. Gaponenko , V. B. Golubev , V. N. Ivanchenko , P. I. Ivanov , A. A. Korol , S. V. Koshuba , E. A. Perevedentsev , E. E. Pyata , A. A. Salnikov , S. I. Serednyakov , V. V. Shary , Yu. M. Shatunov , V. A. Sidorov , Z. K. Silagadze , Yu. V. Usov

Study of the $\rho$, $\omega$, $\phi\to\eta\gamma\to 7\gamma$ Decays with an SND Detector on a VEPP-2M Collider

The $e^+e^-\to\eta\gamma\to 7\gamma$ process was studied in the energy range $2E=600\div 1060$ MeV with an SND detector on a VEPP-2M $e^+e^-$ collider. The decay branching ratios $B(\phi\to\eta\gamma)=(1.343\pm 0.012\pm 0.055)\cdot…

高能物理 - 实验 · 物理学 2008-11-26 M. N. Achasov , S. E. Baru , K. I. Beloborodov , A. V. Berdyugin , A. V. Bozhenok , A. G. Bogdanchikov , D. A. Bukin , S. V. Burdin , A. V. Vasiljev , Yu. S. Velikzhanin , T. V. Dimova , V. P. Druzhinin , M. S. Dubrovin , D. I. Ganyushin , I. A. Gaponenko , V. B. Golubev , V. N. Ivanchenko , I. A. Koop , A. A. Korol , S. V. Koshuba , G. A. Kukartsev , E. V. Pakhtusova , A. A. Salnikov , S. I. Serednyakov , V. V. Shary , Yu. M. Shatunov , V. A. Sidorov , Z. K. Silagadze

Recent results from SND detector at VEPP-2M

The current status of experiments with SND detector at VEPP-2M $e^+e^-$ collider in the energy range $2E_0=0.4-1.4$ GeV is given. The new results of analysis of $\phi$ decay into $\pi^0\pi^0\gamma$, $\eta\pi^0\gamma$ are based on the full…

高能物理 - 实验 · 物理学 2007-05-23 M. N. Achasov , V. M. Aulchenko , K. I. Beloborodov , A. V. Berdyugin , A. V. Bozhenok , A. G. Bogdanchikov , A. D. Bukin , D. A. Bukin , S. V. Burdin , T. V. Dimova , A. A. Drozdetsky , V. P. Druzhinin , V. B. Golubev , V. N. Ivanchenko , P. M. Ivanov , A. A. Korol , S. V. Koshuba , A. A. Mamutkin , E. V. Pakhtusova , E. A. Perevedentsev , E. E. Pyata , A. A. Salnikov , S. I. Serednyakov , V. V. Shary , A. G. Skripkin , Yu. M. Shatunov , V. A. Sidorov , Z. K. Silagadze , A. N. Skrinsky , A. V. Vasiljev

Decay phi->pi+pi-

The process e+e- ->pi+pi- has been studied with the SND detector at VEPP-2M e+e- collider in the vicinity of phi(1020) resonance. From the analysis of the energy dependence of measured cross section the branching ratio…

高能物理 - 实验 · 物理学 2008-11-26 M. N. Achasov , K. I. Beloborodov , A. V. Berdyugin , A. V. Bozhenok , A. D. Bukin , D. A. Bukin , S. V. Burdin , T. V. Dimova , V. P. Druzhinin , M. S. Dubrovin , D. I. Ganyushin , I. A. Gaponenko , V. B. Golubev , V. N. Ivanchenko , P. M. Ivanov , A. A. Korol , S. V. Koshuba , E. V. Pakhtusova , E. A. Perevedentsev , A. A. Salnikov , S. I. Serednyakov , V. V. Shary , Yu. M. Shatunov , V. A. Sidorov , Z. K. Silagadze , A. A. Valishev , A. V. Vasiljev

The $\phi(1020)\to\pi^0\pi^0\gamma$ decay

In the SND experiment at VEPP-2M $e^+e^-$ collider the $\phi(1020)\to\pi^0\pi^0\gamma$ decay was studied and its branching ratio was measured: $B(\phi\to\pi^0\pi^0\gamma)=(1.221\pm 0.098\pm0.061)\cdot10^{-4}$. It was shown, that…

高能物理 - 实验 · 物理学 2008-11-26 M. N. Achasov , S. E. Baru , K. I. Beloborodov , A. V. Berdyugin , A. V. Bozhenok , A. D. Bukin , D. A. Bukin , S. V. Burdin , T. V. Dimova , A. A. Drozdetsky , V. P. Druzhinin , M. S. Dubrovin , I. A. Gaponenko , V. B. Golubev , V. N. Ivanchenko , A. A. Korol , I. A. Koop , S. V. Koshuba , G. A. Kukartsev , A. A. Mamutkin , E. V. Pakhtusova , A. A. Salnikov , S. I. Serednyakov , V. V. Shary , Yu. M. Shatunov , V. A. Sidorov , Z. K. Silagadze , A. N. Skrinsky , A. A. Valishev , A. V. Vasiljev

First observation of the $\phi\to\pi^+\pi^-\gamma$ decay

Radiative decays of the $\phi$ meson have been studied using a data sample of about 20 million $\phi$ decays collected by the CMD-2 detector at VEPP-2M collider in Novosibirsk. From selected $e^+e^-\to\pi^{+}\pi^{-}\gamma$ events the…

高能物理 - 实验 · 物理学 2008-11-26 2 Collaboration

Experimental study of the decay PHI(1020)--->ETA+GAMMA in multi-photon final state

In the SND experiment at VEPP-2M e^+e^- collider the phi(1020) ---> eta+gamma ---> 3pi^0+gamma decay was studied. The branching ratio B(phi--->eta+gamma) = (1.246 +- 0.025 +- 0.057)% was measured.

高能物理 - 实验 · 物理学 2008-11-26 M. N. Achasov , S. E. Baru , A. V. Berdyugin , A. V. Bozhenok , A. D. Bukin , D. A. Bukin , S. V. Burdin , T. V. Dimova , S. I. Dolinsky , V. P. Druzhinin , M. S. Dubrovin , I. A. Gaponenko , V. B. Golubev , V. N. Ivanchenko , A. A. Korol , S. V. Koshuba , I. N. Nesterenko , E. V. Pakhtusova , A. A. Polunin , E. E. Pyata , A. A. Salnikov , S. I. Serednyakov , V. V. Shary , Yu. M. Shatunov , V. A. Sidorov , Z. K. Silagadze , Yu. S. Velikzhanin

Evidence of phi --> pi0 pi0 gamma and phi --> pi0 eta gamma decays in SND experiment at VEPP-2M

Preliminary results on the study of e+e- --> phi(1020) --> pi0 pi0 gamma, eta pi0 gamma processes from SND experiment at VEPP-2M collider in Novosibirsk are presented. Branching ratios of rare radiative phi --> pi0 pi0 gamma and phi --> pi0…

高能物理 - 实验 · 物理学 2009-10-30 M. N. Achasov , A. V. Berdyugin , A. V. Bozhenok , A. D. Bukin , D. A. Bukin , S. V. Burdin , T. V. Dimova , V. P. Druzhinin , M. S. Dubrovin , I. A. Gaponenko , V. B. Golubev , V. N. Ivanchenko , I. A. Koop , A. A. Korol , S. V. Koshuba , E. V. Pakhtusova , A. A. Salnikov , S. I. Serednyakov , V. V. Shary , Yu. M. Shatunov , V. A. Sidorov , Z. K. Silagadze , A. N. Skrinsky , Yu. V. Usov

Radiative decays of light vector mesons

The new data on $\rho,\omega,\phi$ radiative decays into $\pi^0\gamma,\eta\gamma,\eta'\gamma$ from SND experiment at VEPP-2M $e^+e^-$ collider are presented.

高能物理 - 实验 · 物理学 2008-11-26 M. N. Achasov , S. E. Baru , K. I. Beloborodov , A. V. Berdyugin , A. V. Bozhenok , A. D. Bukin , D. A. Bukin , S. V. Burdin , T. V. Dimova , S. I. Dolinsky , A. A. Drozdetsky , V. P. Druzhinin , M. S. Dubrovin , I. A. Gaponenko , V. B. Golubev , V. N. Ivanchenko , I. A. Koop , A. A. Korol , S. V. Koshuba , G. A. Kukartsev , E. V. Pakhtusova , A. A. Polunin , V. M. Popov , A. A. Salnikov , S. I. Serednyakov , V. V. Shary , Yu. M. Shatunov , V. A. Sidorov , Z. K. Silagadze , Yu. S. Velikzhanin , A. V. Vasiljev , A. S. Zakharov

Experimental study of the e^+e^-\to\pi^+\pi^-\pi^0 reaction by SND detector in the energy range sqrt{s}=0.42--1.38 GeV

The review of the SND results of the $e^+e^-\to\pi^+\pi^-\pi^0$ process study in the energy range $\sqrt[]{s}=0.42$ -- 1.38 GeV at VEPP-2M collider, based on about $2\times 10^6$ selected events, is presented. The total cross section,…

高能物理 - 实验 · 物理学 2014-11-17 M. N. Achasov , K. I. Beloborodov , A. V. Berdyugin , A. G. Bogdanchikov , A. V. Bozhenok , A. D. Bukin , D. A. Bukin , T. V. Dimova , V. P. Druzhinin , V. B. Golubev , A. A. Korol , S. V. Koshuba , E. V. Pakhtusova , E. A. Perevedentsev , E. E. Pyata , S. I. Serednyakov , Yu. M. Shatunov , V. A. Sidorov , Z. K. Silagadze , A. A. Valishev , A. V. Vasiljev

New Data from SND Detector in Novosibirsk

The current status of experiments with SND detector at VEPP-2M e^+e^- collider in the energy range 2E_0=400-1400 MeV and recent results of data analysis for $\phi$, $\omega$ and $\rho$ decays and e^+e^- annihilation into hadrons are…

高能物理 - 实验 · 物理学 2019-08-17 M. N. Achasov , V. M. Aulchenko , K. I. Beloborodov , A. V. Berdyugin , A. V. Bozhenok , A. D. Bukin , D. A. Bukin , S. V. Burdin , T. V. Dimova , S. I. Dolinsky , A. A. Drozdetsky , V. P. Druzhinin , M. S. Dubrovin , I. A. Gaponenko , V. B. Golubev , V. N. Ivanchenko , I. A. Koop , A. A. Korol , M. S. Korostelev , S. V. Koshuba , G. A. Kukartsev , E. V. Pakhtusova , V. M. Popov , A. A. Salnikov , S. I. Serednyakov , V. V. Shary , Yu. M. Shatunov , V. A. Sidorov , Z. K. Silagadze , A. N. Skrinsky , Yu. V. Usov , Yu. S. Velikzhanin , A. V. Vasiljev , A. S. Zakharov

Review of experimental results from SND detector

The review of experimental results obtained with SND detector at VEPP-2M $e^+e^-$ collider in the energy region $\sqrt[]{s}=0.36$ -- 1.38 GeV is given. The presented results include the following items: studies of the light vector mesons…

高能物理 - 实验 · 物理学 2019-08-17 M. N. Achasov , V. M. Aulchenko , K. I. Beloborodov , A. V. Berdyugin , A. G. Bogdanchikov , A. V. Bozhenok , A. D. Bukin , D. A. Bukin , S. V. Burdin , T. V. Dimova , A. A. Drozdetski , V. P. Druzhinin , D. I. Ganushin , V. B. Golubev , V. N. Ivanchenko , P. M. Ivanov , A. A. Korol , S. V. Koshuba , I. N. Nesterenko , E. V. Pakhtusova , A. A. Polunin , A. A. Salnikov , S. I. Serednyakov , V. V. Shary , Yu. M. Shatunov , V. A. Sidorov , Z. K. Silagadze , A. N. Skrinsky , A. G. Skripkin , Yu. V. Usov , A. V. Vasiljev

Study of the $e^+e^-\to\eta\gamma$ process with SND detector at the VEPP-2M $e^+e^-$ collider

In experiment with the SND detector at VEPP-2M $e^+e^-$ collider the $e^+e^-\to\eta\gamma$ cross section was measured in the energy range $E$=0.60--1.38 GeV with the integrated luminosity of 27.8 pb$^{-1}$. The measured cross section is…

高能物理 - 实验 · 物理学 2008-11-26 M. N. Achasov , V. M. Aulchenko , K. I. Beloborodov , A. V. Berdyugin , A. G. Bogdanchikov , A. V. Bozhenok , D. A. Bukin , T. V. Dimova , V. P. Druzhinin , V. B. Golubev , A. A. Korol , S. V. Koshuba , A. V. Otboev , E. V. Pakhtusova , S. I. Serednyakov , Yu. M. Shatunov , V. A. Sidorov , Z. K. Silagadze , A. N. Skrinsky , A. V. Vasiljev

Measurement of the $e^+e^-\to\eta\gamma$ cross section near the $\phi(1020)$ resonance with the SND detector

In the experiment with the SND detector at the VEPP-2000 $e^+e^-$ collider, the $e^+e^-\to\eta\gamma$ cross section is measured in the energy range $E = 980 - 1060$ MeV. The measurement is carried out in the $\eta\to 2\gamma$ decay mode.…

高能物理 - 实验 · 物理学 2025-10-21 SND Collaboration , M. N. Achasov , A. E. Alizzi , A. Yu. Barnyakov , E. V. Bedarev , K. I. Beloborodov , A. V. Berdyugin , A. G. Bogdanchikov , A. A. Botov , D. E. Chistyakov , T. V. Dimova , V. P. Druzhinin , L. V. Kardapoltsev , A. S. Kasaev , A. A. Kattsin , A. G. Kharlamov , I. A. Koop , A. A. Korol , D. P. Kovrizhin , A. S. Kupich , A. P. Kryukov , N. A. Melnikova , N. Yu. Muchnoi , A. E. Obrazovsky , A. A. Oorzhak , E. V. Pakhtusova , I. A. Polomoshnov , K. V. Pugachev , S. A. Rastigeev , Yu. A. Rogovsky , A. I. Senchenko , S. I. Serednyakov , Yu. M. Shatunov , D. A. Shtol , Z. K. Silagadze , K. D. Sungurov , I. K. Surin , Yu. V. Usov , V. N. Zhabin , Yu. M. Zharinov , V. V. Zhulanov

Study of the process $e^+e^- \to \pi^+\pi^-\pi^0$ in the energy region $\sqrt[]{s}$ below 0.98 GeV

The cross section of the process $e^+e^-\to \pi^+\pi^-\pi^0$ was measured in the Spherical Neutral Detector (SND) experiment at the VEPP-2M collider in the energy region $\sqrt[]{s}$ below 980 MeV. This measurement was based on about $1.2…

高能物理 - 实验 · 物理学 2008-11-26 M. N. Achasov , K. I. Beloborodov , A. V. Berdyugin , A. G. Bogdanchikov , A. V. Bozhenok , A. D. Bukin , D. A. Bukin , T. V. Dimova , V. P. Druzhinin , V. B. Golubev , I. A. Koop , A. A. Korol , S. V. Koshuba , A. P. Lysenko , E. V. Pakhtusova , S. I. Serednyakov , V. V. Shary , Yu. M. Shatunov , Z. K. Silagadze , A. N. Skrinsky , A. A. Valishev , A. V. Vasiljev

Experimental Study of rho -> pi0 pi0 gamma and omega -> pi0 pi0 gamma Decays

The e+e- -> pi0 pi0 gamma process was studied in the SND experiment at VEPP-2M e+e- collider in the energy region 0.60-0.97 GeV. From the analysis of the energy dependence of measured cross section the branching ratios B(omega -> pi0 pi0…

高能物理 - 实验 · 物理学 2008-11-26 M. N. Achasov , K. I. Beloborodov , A. V. Berdyugin , A. G. Bogdanchikov , A. V. Bozhenok , D. A. Bukin , S. V. Burdin , A. V. Vasiljev , V. B. Golubev , T. V. Dimova , V. P. Druzhinin , V. N. Ivanchenko , A. A. Korol , I. A. Koop , S. V. Koshuba , A. V. Otboev , E. V. Pakhtusova , A. A. Salnikov , S. I. Serednyakov , V. A. Sidorov , Z. K. Silagadze , A. N. Skrinsky , A. G. Skripkin , Yu. V. Usov , V. V. Shary , Yu. M. Shatunov

Study of the reaction $e^+e^- \to \pi^0\gamma$ with the SND detector at the VEPP-2M collider

The process $e^+e^- \to \pi^0\gamma$ has been studied in the experiment with the SND detector at the VEPP-2M $e^+e^-$ collider. The $e^+e^- \to \pi^0\gamma$ cross section has been measured in the center-of-mass energy range from 0.60 to…

高能物理 - 实验 · 物理学 2016-05-09 M. N. Achasov , K. I. Beloborodov , A. V. Berdyugin , A. G. Bogdanchikov , T. V. Dimova , V. P. Druzhinin , V. B. Golubev , I. A. Koop , A. A. Korol , S. V. Koshuba. E. V. Pakhtusova , S. I. Serednyakov , Yu. M. Shatunov , Z. K. Silagadze , A. N. Skrinsky , Yu. V. Usov , A. V. Vasiljev

Measurements of the parameters of the $\phi(1020)$ resonance through studies of the processes $e^+e^- \to K^+K^-$, $K_SK_L$ and $\pi^+\pi^-\pi^0$

The cross sections of the processes $e^+e^- \to K^+K^-$, $e^+e^- \to K_SK_L$ and $e^+e^- \to \pi^+\pi^-\pi^0$ were measured in the SND experiment at the VEPP-2M collider in the energy region near the $\phi(1020)$ meson. These measurements…

高能物理 - 实验 · 物理学 2019-08-17 M. N. Achasov , K. I. Beloborodov , A. V. Berdyugin , A. G. Bogdanchikov , A. V. Bozhenok , A. D. Bukin , D. A. Bukin , S. V. Burdin , T. V. Dimova , V. P. Druzhinin , M. S. Dubrovin , I. A. Gaponenko , V. B. Golubev , V. N. Ivanchenko , P. M. Ivanov , A. A. Korol , M. S. Korostelev , S. V. Koshuba , E. V. Pakhtusova , A. A. Polunin , E. E. Pyata , A. A. Salnikov , S. I. Serednyakov , V. V. Shary , Yu. M. Shatunov , V. A. Sidorov , Z. K. Silagadze , A. N. Skrinsky , Yu. V. Usov , A. V. Vasiljev , Yu. S. Velikzhanin

Observation of the decay PHI(1020)--->OMEGA+PI0

The reaction e^+e^- ---> OMEGA+PI0 ---> PI+PI- 2PI0 has been studied with SND detector at VEPP-2M e^+e^- collider in the vicinity of the PHI(1020) meson resonance. The observed interference pattern in the energy dependence of the cross…

高能物理 - 实验 · 物理学 2008-11-26 M. N. Achasov , S. E. Baru , A. V. Berdyugin , A. V. Bozhenok , D. A. Bukin , S. V. Burdin , T. V. Dimova , S. I. Dolinsky , V. P. Druzhinin , M. S. Dubrovin , I. A. Gaponenko , V. B. Golubev , V. N. Ivanchenko , A. A. Korol , M. S. Korostelev , S. V. Koshuba , E. V. Pakhtusova , A. A. Polunin , E. E. Pyata , A. A. Salnikov , V. V. Shary , S. I. Serednyakov , Yu. M. Shatunov , V. A. Sidorov , A. N. Skrinsky , Z. K. Silagadze , Yu. S. Velikzhanin

Direct measurement of the phi(1020) leptonic branching ratio

The process e+e-->mu+mu- has been studied by SND detector at VEPP-2M e+e- collider in the phi(1020)-resonance energy region. The measured effective phi meson leptonic branching ratio:…

高能物理 - 实验 · 物理学 2008-11-26 M. N. Achasov , K. I. Beloborodov , A. V. Berdyugin , A. G. Bogdanchikov , A. V. Bozhenok , A. D. Bukin , D. A. Bukin , S. V. Burdin , T. V. Dimova , A. A. Drozdetsky , V. P. Druzhinin , M. S. Dubrovin , I. A. Gaponenko , V. B. Golubev , V. N. Ivanchenko , P. M. Ivanov , A. A. Korol , S. V. Koshuba , A. P. Lysenko , I. N. Nesterenko , E. V. Pakhtusova , E. A. Perevedentsev , A. A. Salnikov , S. I. Serednyakov , V. V. Shary , Yu. M. Shatunov , V. A. Sidorov , Z. K. Silagadze , A. N. Skrinsky , Yu. V. Usov , A. V. Vasiljev