S V Golovkin

Publications (29)5.6 Total impact

• Article: Investigation of the diffractive reaction p + N → [∑+K0] + N at the proton energy of Ep=70 GeV and observation of the decay process X(2000) → ∑+K0

  D. V. Vavilov, V. A. Viktorov, S. V. Golovkin, A. P. Kozhevnikov, V. Z. Kolganov, V. P. Kubarovsky, V. F. Kurshetsov, L. G. Landsberg, G. S. Lomkatsi, V. V. Molchanov, V. A. Mukhin, A. F. Nilov, S. V. Petrenko, V. T. Smolyankin
  [show abstract] [hide abstract]
  ABSTRACT: The diffractive reaction p + N → [∑+ K 0] + N induced by 70-GeV protons is investigated at the SPHINX facility. The measured mass spectrum of the ∑+ K 0 system originating from this reaction shows a resonance structure with a mass of M=1995±18 MeV and a width of Γ=90±32 MeV. The cross section for the formation of this structure is found to be σ=182±38 nb per target nucleon. These data comply well with the results that we obtained previously in studying the reaction p + N → [∑0 K +] + N, where we observed the formation of the X(2000) → ∑0 K + state, a candidate for an exotic baryon with hidden strangeness. The measured ratio R of the two branching fractions, R = Br[X(2000) → ∑+ K 0]/Br[X(2000) → ∑0 K +] = 1.91 ± 0.38, is consistent with the value of R=2 expected for an isospin-1/2 baryon.
  Physics of Atomic Nuclei 04/2012; 63(8):1391-1394. · 0.57 Impact Factor
• Article: Search for exotic baryons with hidden strangeness in proton diffractive production at the energy of 70 GeV

  Yu. M. Antipov, A. V. Artamonov, V. A. Batarin, O. V. Eroshin, S. V. Golovkin, Yu. P. Gorin, V. N. Govorun, A. N. Isaev, A. P. Kozhevnikov, V. P. Kubarovsky, [......], A. N. Sytin, V. S. Vaniev, D. V. Vavilov, V. A. Victorov, V. I. Yakimchuk, S. A. Zimin, V. Z. Kolganov, G. S. Lomkatsi, A. F. Nilov, V. T. Smolyankin
  [show abstract] [hide abstract]
  ABSTRACT: The first preliminary results from the upgraded SPHINX spectrometer, working in the proton beam with the energy of 70 GeV of the IHEP accelerator, are presented. The data for the reaction p + N ⊒ [Σ0 K +] + N based on new statistics are in good agreement with our previous data and strongly support the existence of the X (2000) state (with an increase in statistics for this state by a factor of ∼5). We also observed radiative decay of Λ(1520) → Λγ. The significant increase in statistics for many diffractive-production reactions will allow us to study them in great detail.
  Physics of Atomic Nuclei 04/2012; 65(11):2070-2076. · 0.57 Impact Factor
• Article: Λ(1520) → Λγ radiative-decay width

  D. V. Vavilov, Yu. M. Antipov, A. V. Artamonov, V. A. Batarin, V. A. Victorov, S. V. Golovkin, Yu. P. Gorin, O. V. Eroshin, A. P. Kozhevnikov, V. Z. Kolganov, [......], V. M. Leontiev, G. S. Lomkatsi, V. V. Molchanov, V. A. Mukhin, A. F. Nilov, D. I. Patalakha, S. V. Petrenko, A. I. Petrukhin, V. T. Smolyankin, The SPHINX Collaboration (IHEP-ITEP
  [show abstract] [hide abstract]
  ABSTRACT: The radiative decay Λ(1520) → Λγ was recorded in the exclusive reaction p + N → Λ(1520)K + + N at the SPHINX facility. The branching ratio for this decay and the corresponding partial width were found to be, respectively, Br[Λ(1520) → Λγ] = (1.02 ± 0.21) × 10−2 and Γ[Λ(1520) → Λγ] = 159 ± 35 keV (the quoted errors are purely statistical, the systematic errors being within 15%).
  Physics of Atomic Nuclei 02/2005; 68(3):378-384. · 0.57 Impact Factor
• Source

  Available from: Vtctor Kurshetsov

  Article: Measurement of the radiative decay width \Gamma[\Lambda(1520) --> \Lambda \gamma] with the SPHINX spectrometer

  Yu. M. Antipov, A V Artamonov, V. A. Batarin, D V Vavilov, V A Victorov, O. V. Eroshin, S V Golovkin, Yu. P. Gorin, V. Z. Kolganov, A. P. Kozhevnikov, [......], V F Kurshetsov, L. G. Landsberg, V. M. Leontiev, G S Lomkatsi, V V Molchanov, V A Mukhin, A F Nilov, D. I. Patalakha, S. V. Petrenko, V. T. Smolyankin
  [show abstract] [hide abstract]
  ABSTRACT: The radiative decay \Lambda(1520) --> \Lambda \gamma was measured directly in the study of exclusive diffractive-like reaction p + N --> \Lambda(1520) K^+ + N, \Lambda(1520) --> \Lambda \gamma with the SPHINX spectrometer. The values of the branching and partial width of this radiative decay were obtained: BR[\Lambda(1520) --> \Lambda \gamma] = (1.02+/-0.21(stat)+/-0.15(syst))x10^{-2} and \Gamma[\Lambda(1520) --> \Lambda \gamma] = 159+/-33(stat)+/-26(syst) keV.
  07/2004;
• Article: New data on the p + N → [Σ0K+] + N reaction at E p= 70 GeV and the search for exotic baryons

  S.V. Golovkin, A.P. Kozhevnikov, V.P. Kubarovsky, V.F. Kurshetsov, L.G. Landsberg, V.V. Molchanov, V.A. Mukhin, S.V. Petrenko, V.A. Senko, D.V. Vavilov, V.A. Victorov, V.Z. Kolganov, G.S. Lomkatsi, A.F. Nilov, V.T. Smolyankin
  [show abstract] [hide abstract]
  ABSTRACT: New data for the diffractive reaction p+N→ [Σ0 K +] +N at E p= 70 GeV were obtained with partially upgraded SPHINX setup. The data are in a good agreement with the results of our previous study of this reaction. In the mass spectrum M(Σ0 K +) a structure at the threshold region with a mass ∼1810 MeV and a distinct X(2000) peak with M= 1989 ± 6 MeV and γ= 91 ± 20 MeV are observed. Unusual features of the massive X(2000) state (narrow decay width, anomalously large branching ratio for the decay channel with strange particle emission) make it a serious candidate for cryptoexotic pentaquark baryon with hidden strangeness |qqqs¯s>. We also present new results on the narrow threshold structure X(1810) with M= 1807 ± 7 MeV and γ= 62 ± 19 MeV which is produced in the region of very small P 2 T < 0.01 GeV2. The possibility of the Coulomb production mechanism for X(1810) is discussed.
  European Physical Journal A 07/1999; 5(4):409-416. · 2.19 Impact Factor
• Source

  Available from: Vtctor Kurshetsov

  Article: Study of the OZI selection rule in hadronic processes

  S.V. Golovkin, A.P. Kozhevnikov, V.P. Kubarovsky, A.I. Kulyavtsev, V.F. Kurshetsov, L.G. Landsberg, V.V. Molchanov, V.A. Mukhin, I.N. Nikitin, V.I. Solyanik, D.V. Vavilov, V.A. Victorov, M.Y. Balatz, G.V. Dzubenko, G.S. Lomkatsi, V.T. Smolyankin
  [show abstract] [hide abstract]
  ABSTRACT: In the experiments with LEPTON-F and SPHINX spectrometers the pion-induced charged exchange reactions &#63m + p M J + n and &#63m + p M P + n at P&#63m = 32.5 GeV, as well as proton-induced diffractive reactions p + N M [p &#74] + N and p + N M [p &#80] + N at Ep = 70 GeV were studied. The comparison of the cross-sections for J and &#80-production in these reactions is used for testing the OZI selection rule in hadronic processes. It has been demonstrated that in pion reactions the ratio of the yields of J and &#80-mesons R(&#74/&#80) = (3 - 1) 10х is in a good agreement with naive quark model prediction based on the mixing in vector meson nonet and on the OZI rule (R(&#74/&#80)OZI = tg2( &#47V ­ 4 10&#1093). At the same time in proton reactions the effective ratio of J and P yields is ~ (4 1 7) 10&#1092, i.e. a strong violation of the OZI rule is observed in proton-nucleon interactions. This violation can be in favor of possible existence of some exotic s&#165s component in the quark structure of protons.
  Zeitschrift für Physik A Hadrons and Nuclei 11/1997; 359(4):435-444.
• Article: Study of quasiexclusive neutral meson production in pN interactions at Ep = 70 GeV in the deep fragmentation region

  S.V. Golovkin, A.P. Kozhevnikov, V.P. Kubarovsky, A.I. Kulyavtsev, V.F. Kurshetsov, L.G. Landsberg, V.V. Molchanov, V.A. Mukhin, V.I. Solyanik, D.V. Vavilov, [......], G.K. Kliger, V.Z. Kolganov, M.A. Kubantsev, G.S. Lomkatsi, A.F. Nilov, A.I. Sitnikov, V.T. Smolyankin, V.S. Verebrusov, V.E. Vishnyakov, A.V. Kubarovsky
  [show abstract] [hide abstract]
  ABSTRACT: Quasiexclusive neutral meson production in pN-interactions is studied in experiments with the SPHINX facility operating in a proton beam from the IHEP accelerator (Ep = 70 GeV). The cross sections and the parameters of the differential distributions for &#63o, &#80, - and Ko production in the deep fragmentation region (xF > 0.79 1 0.86) are presented. The results show that such proton quasiexclusive reactions with baryon exchange may be promising in searches for exotic mesons.
  Zeitschrift für Physik A Hadrons and Nuclei 10/1997; 359(3):327-335.
• Article: Investigation of the OZI selection rule for connected quark diagrams in hadronic processes: 2. Search for the OZI-suppressed decay B/b1(1235) --> phi pi 0

  V. A. Viktorov, S. V. Golovkin, V. A. Dorofeev, A. S. Konstantinov, V. P. Kubarovsky, A. I. Kulyavtsev, V. F. Kurshetsov, L. G. Landsberg, V. A. Mukhin, V. I. Solyanik
  Physics of Atomic Nuclei 06/1996; 59:1184-1185. · 0.57 Impact Factor
• Article: Study of coherent diffractive production reactions ofp+C→[Y0K+]+C type and observation of narrow structures in ∑ (1385)0K+ and ∑0K+ effective mass spectra

  S. V. Golovkin, A. P. Kozhevnikov, V. P. Kubarovsky, A. I. Kulyavtzev, V. F. Kurshetsov, A. I. Kushnirenko, L. G. Landsberg, V. V. Molchanov, V. A. Mukhin, V. I. Solyanik, [......], M. Ya. Balatz, G. V. Dzubenko, A. D. Kamenskii, G. K. Kliger, V. Z. Kolganov, V. S. Lakaev, G. S. Lomkatzi, A. P. Nilov, V. T. Smolyankin, V. E. Vishnyakov
  [show abstract] [hide abstract]
  ABSTRACT: In the experiments at the SPHINX facility in 70 GeV proton beam of the IHEP accelerator the coherent diffractive production reactions on carbon nucleip+C [(1385)0 K ++C andp+C[0 K +]+C were investigated. The evidences for new baryon states were obtained in the study of hyperon-kaon effective mass spectra in these two reactions:X (2050) with massM=(20526) MeV and width =(35 –35 +22 ) MeV inM[(1385)0 K +] andX(2000) withM=19996 MeV and =9117 MeV inM[0 K +]. The unusual features of these massive states (small enough decay widths, anomalously large branching ratios for decays with strange particles emission) make them very serious candidates for cryptoexotic pentaquark baryons with hidden strangeness.
  Zeitschrift für Physik C 01/1995; 68(4):585-594.
• Article: Search forNϕ (1960) baryon

  M. Ya. Balatz, I. M. Belyaev, V. A. Dorofeev, G. B. Dzubenko, I. M. Filimonov, S. V. Frolov, S. V. Golovkin, Yu. L. Grishkin, M. V. Gritzuk, A. D. Kamenskii, [......], V. A. Mukhin, A. P. Nilov, Yu. B. Novoghilov, V. A. Prutskoi, A. I. Sitnikov, V. T. Smolyankin, V. I. Solyanik, D. V. Vavilov, V. A. Victorov, V. E. Vishnyakov
  [show abstract] [hide abstract]
  ABSTRACT: In the experiments at the SPHINX facility in the 70 GeV proton beam of the IHEP accelerator the diffractive production reactionsp+N[(1385)0 K +] +N andp+N[(1385)0 K +]+N+ (neutral particles) were studied. In the effective mass spectra of the [(1385)0 K +] system in these processes there were no signals from the anomalously narrow baryon stateN (1960) which had been observed earlier in the measurement at the BIS-2 setup.
  Zeitschrift für Physik C 08/1994; 61(3):399-405.
• Article: Study of the diffractive production of baryon states and search for cryptoexotic baryons with hidden strangeness

  M. Ya. Balatz, I. M. Belyaev, V. A. Dorofeev, G. B. Dzyubenko, I. M. Filimonov, S. V. Frolov, S. V. Golovkin, Yu. L. Grishkin, M. V. Gritzuk, A. V. Jilin, [......], V. A. Mukhin, A. F. Nilov, Yu. B. Novoghilov, V. A. Prutskoi, A. I. Sitnikov, V. T. Smolyankin, V. I. Solyanik, D. V. Vavilov, V. A. Victorov, V. E. Vishnyakov
  [show abstract] [hide abstract]
  ABSTRACT: The reactions of baryon diffractive productionp+N(pK + K –)+N, p+N(p)+N, p+N[(1520)K +]+N p+N[(1385) o K +]+N in the 70 GeV proton beam were studied. Very sensitive upper limits for the production cross sections of heavy narrow cryptoexotic baryon resonances with hidden strangeness were obtained.
  Zeitschrift für Physik C 05/1994; 61(2):223-227.
• Article: The study of reaction p+N -> [Σ(1385)0K + ]+N at the energy of 70 GeV {au}SPHINX COLLABORATION (IHEP-ITEP)

  V. A. Dorofeev, S. V. Golovkin, A. P. Kozhevnikov, A. S. Konstantinov, V. P. Kubarovskii, N. Yu. Kul'Man, A. I. Kulyavtsev, V. F. Kurshetsov, A. E. Kushnirenko, L. G. Landsberg, V. V. Molchanov, V. A. Mukhin, Yu. B. Novozhilov, A. V. Skleznev, V. I. Solyanik, et al
  Physics of Atomic Nuclei 01/1994; 57:238-247. · 0.57 Impact Factor
• Article: The search for heavy pentaquark exotic baryons with hidden strangeness in the p+N -> (pφ)+N and p+N -> [Λ(1520)K + ]+N reactions at Ep=70 GeV {au}SPHINX COLLABORATION (IHEP-ITEP)

  V. A. Dorofeev, S. V. Golovkin, A. P. Kozhevnikov, A. S. Konstantinov, V. P. Kubarovskii, N. Yu. Kul'Man, A. I. Kulyavtsev, V. F. Kurshetsov, A. E. Kushnirenko, L. G. Landsberg, V. V. Molchanov, V. A. Mukhin, Yu. B. Novozhilov, A. V. Skleznev, V. I. Solyanik, et al
  Physics of Atomic Nuclei 01/1994; 57:227-237. · 0.57 Impact Factor
• Article: Study of the radiative decayη′→π+π−γ

  S. I. Bityukov, G. V. Borisov, V. A. Dorofeev, R. I. Dzhelyadin, S. V. Golovkin, M. V. Gritzuk, A. S. Konstantinov, V. P. Kubarovski, N. Yu. Kul'man, A. I. Kulyavtzev, V. F. Kurshetzov, L. G. Landsberg, V. V. Lapin, V. V. Molchanov, V. A. Mukhin, Yu. B. Novozhilov, V. F. Obraztzov, V. I. Solyanik, V. A. Viktorov, A. M. Zaitsev
  [show abstract] [hide abstract]
  ABSTRACT: The radiative decay + – has been studied with the statistics of 2000 events. Different ways of describingm distribution are considered. It is shown that if the dominating contribution to this process is made by the decay channel , then the generally accepted ways of describing the peak do not agree with experimental data.
  Zeitschrift für Physik C 01/1991; 50(3):451-454.
• Article: Detection of the radiative decay D(1285)φγ

  S. I. Bityukov, G. V. Borisov, V. A. Viktorov, S. V. Golovkin, R. I. Dzhelyadin, V. A. Dorofeev, A. M. Zaétsev, A. S. Konstantinov, V. P. Kubarovskiǐ, A. I. Kulyavtsev, V. F. Kurshetsov, L. G. Landsberg, V. V. Lapin, V. A. Mukhin, Yu. B. Novozhilov, V. F. Obraztsov, V. I. Solyanik
  ZhETF Pis ma Redaktsiiu. 03/1987; 45:368.
• Article: Study of D(1285)- and E(1420)-meson production in exclusive interactions by negatively charged pions and kaons at 32. 5 GeV/c

  S.I. Bityukov, V.A. Viktorov, S.V. Golovkin, M.V. Gritsuk, R.I. Dzhelyadin, V.A. Dorofeev, A.M. Zaitsev, D.B. Kakauridze, V.A. Kachanov, A.S. Konstantinov, V.F. Konstantinov, V.P. Kubarovskii, A.V. Kulik, V.F. Kurshetsov, L.G. Landsberg, V.V. Lapin, V.A. Mukhin, Y.B. Novozhilov, V.F. Obraztsov, V.I. Solyanik
  [show abstract] [hide abstract]
  ABSTRACT: D(1285)- and E(1420)-meson production in ..pi../sup -/- and K/sup -/-meson charge-exchange reactions at 32.5 GeV/c are studied. The D(1285) production cross section is found to be sigma(..pi../sup -/p..-->..D(1285)n) = 4.3 +- 1.3 ..mu..b and the ratio sigma(..pi../sup -/p..-->..E(1420)n)/sigma(..pi../sup -/p..-->..D(1285)n)..E(1420)Y)/sigma(..pi../sup -/p..-->..E(1420)n)>10 confirms this conclusion about the quark content of the E meson.
  Sov. J. Nucl. Phys. (Engl. Transl.); (United States). 04/1984; 39:5.
• Article: Investigation of the transition electromagnetic form factor in the. omega --> pi. /sup 0/. mu. /sup +/. mu. /sup -/ decay

  V.A. Viktorov, S.V. Golovkin, R.I. Dzhelyadin, A.M. Zaitsev, A.S. Konstantinov, V.F. Konstantinov, V.P. Kubarovskii, L.G. Landsberg, V.A. Mukhin, V.F. Obraztsov, T.I. Petrunina, Y.D. Prokoshkin
  [show abstract] [hide abstract]
  ABSTRACT: Sixty events of the rare electromagnetic decay ..omega --> pi../sup 0/..mu../sup +/..mu../sup -/ were recorded. The relative probability of this decay BR x (..omega --> pi../sup 0/..mu../sup +/..mu../sup -/) = (9.6 +- 2.3) x 10/sup -5/ is determined. The spectrum of the effective masses of muon pairs was measured and the electromagnetic transition form factor of the ..omega pi../sup 0/ vertex was determined F/sub ..omega../ (m/sup 2//sub mumu/;m/sup 2//sub pi0/) = (1-m/sup 2//sub mumu//..lambda../sup 2/)/sup -1/, where ..lambda.. = 0.65 +- 0.03 GeV/c/sup 2/. A comparison with the vector-dominance model is made.
  JETP Lett. (Engl. Transl.); (United States). 02/1981; 33:4.
• Article: J/ψ particle production in π− -N interactions at 27 and 40 GeV/c

  Yu.B. Bushnin, A.A. Denisenko, A.F. Dunaitsev, R.I. Dzhelyadin, S.V. Golovkin, A.K. Konoplyannikov, V.F. Konstantinov, V.P. Kubarovski, L.G. Landsberg, V.M. Leontiev, V.A. Mukhin, V.F. Obraztsov, T.I. Petrunina, N.S. Pokrovski, A.M. Zaitsev
  [show abstract] [hide abstract]
  ABSTRACT: The results on studying J/ψ particle production in the inclusive process π− + (Cu nucleus) → (J/ψ) + … obtained on the spectrometer “Lepton” are presented for momenta of 27 and 40 GeV/c. The total cross sections for J/ψ production have been determined: σ[π− + (Cu nucleus) → J/ψ + …] |x>0 = 410 ± 80 nb/Cu nucleus (Pπ = 27 GeV/c), 980 ± 120 nb/Cu nucleus (Pπ = 40 GeV/c). Differential distributions for this process in the kinematic variables X and P⊥ are presented. There is a maximum in X-distribution in the range X ≈ 0.3.
  Physics Letters B. 72(2):269-272.
• Article: Observation of ω → π0μ+μ− decay

  R.I. Dzhelyadin, S.V. Golovkin, M.V. Gritsuk, D.B. Kakauridze, V.A. Kachanov, A.K. Konoplyannikov, A.S. Konstantinov, V.F. Konstantinov, V.P. Kubarovski, A.V. Kulik, L.G. Landsberg, V.M. Leontiev, V.A. Mukhin, V.F. Obraztsov, T.I. Petrunina, N.S. Pokrovski, Yu.D. Prokoshkin, V.A. Victorov, A.M. Zaitsev
  [show abstract] [hide abstract]
  ABSTRACT: The results of studying the mass spectrum of μ+μ−γγ systems produced in π−p collisions at 25 and 33 GeV/c presented. The wide-aperture magnetic spectrometer with a hodoscope γ-detector was used to identify muon pairs and photons. There is a clear peak in the mass spectrum which corresponds to the decay ω → π0μ+μ− previously not observed. The branching ratio for the decay is estimated to be 9 × 10−5 with a systematic error of 50%.
  Physics Letters B.
• Article: Observation of η′ → μ+μ−γ decay

  R.I. Dzhelyadin, S.V. Golovkin, M.V. Gritzuk, V.A. Kachonov, D.B. Kakauridse, A.S. Konstantinov, V.F. Konstantinov, V.P. Kubarovski, A.V. Kulik, L.G. Landsberg, V.M. Leontiev, V.A. Mukhin, V.F. Obrastzov, T.I. Petrunina, N.S. Pokrovski, Yu.D. Prokoshkin, V.A. Victorov, A.M. Zaitsev
  [show abstract] [hide abstract]
  ABSTRACT: The mass spectrum for μ+μ−γ systems produced in π−p interactions at 25 and 33 GeV/c has been studied. To detect muon pairs and photons a wide-aperture magnetic spectrometer and a hodoscope γ-detector were used. In the mass spectrum a clear peak is seen corresponding to the decay η′ → μ+μ−γ not previously observed. The branching ratio for this decay, 8 × 10−5, is in agreement with the η′ form-factor model, based on vector dominance.
  Physics Letters B.