Measurement of neutral-meson masses in meson-nucleus interactions at a momentum of 7 GeV/c at the Hyperon-M setup

Bogolyubsky, M. Yu.; Evdokimov, S. V.; Izucheev, V. I.; Patalakha, D. I.; Polishchuk, B. V.; Sadovsky, S. A.; Soloviev, A. S.; Stolpovsky, M. V.; Kharlov, Yu. V.; Kuzmin, N. A.; Obudovsky, V. P.; Petukhov, Yu. P.; Sychkov, S. Ya.
November 2013
Physics of Atomic Nuclei;Nov2013, Vol. 76 Issue 11, p1324
Academic Journal
The π0, η, K0, ω, and f2(1270) masses were measured at the HYPERON-Msetup in meson-nucleus interactions at a momentum of 7 GeV/ c by using six nuclear targets: Be, C, Al, Cu, Sn, and Pb. The experiment in question proved to be insensitive to the expected effects of a modification to the omega-meson mass in nuclear matter. As for the f2(1270) meson, its mass and width values averaged over all experimental data, $$m_{f_2 }$$ = 1275.8 ± 1.0(stat.) ± 0.4(syst.) MeV/ c2 and $$\Gamma _{f_2 }$$ = 190.3 ± 1.9(stat.) ± 1.8(syst.) MeV/ c2, agree well with the world-average values. At the same time, our experimental data do not rule out the possible effect of an in-medium modification to the f2(1270)-meson mass for heavy nuclei at a level better than 0.4%.


Related Articles


    The analysis of the density dependence of the nuclear symmetry energy in strangeness-rich nuclear matter was done. Calculations were performed on the basis of models with significant differences in the vector meson sector.

  • Production of broad baryonic resonances in collisions of heavy nuclei. Royzen, I. I. // Physics of Atomic Nuclei;Sep2006, Vol. 69 Issue 9, p1600 

    The problem of the production of short-lived (broad) baryonic resonances in central collisions of relativistic heavy nuclei is considered. It is shown that the available experimental data on this process can be reproduced in the framework of the previously proposed general approach, which...

  • New Method of Studying Slow Strange Meson Properties in Nuclear Matter. Kiselev, Yu.T.; Sheinkman, V.A. // JETP Letters;11/10/2003, Vol. 78 Issue 9, p528 

    We suggest a new experimental method to explore the properties of slow strange mesons at normal nuclear matter density. We show that the K[sup +] and K[sup –] mesons with extremely small momenta relative to the surrounding medium rest frame can be produced in nucleus–nucleon...

  • Calculated Masses of Heaviest Nuclei. Muntian, I.; Patyk, Z.; Sobiczewski, A. // Physics of Atomic Nuclei;Jun2003, Vol. 66 Issue 6, p1015 

    Masses of heaviest nuclei are calculated within a macroscopic-microscopic approach. Even-even, odd-A, and odd-odd nuclides are considered. A large region of nuclei with proton and neutron numbers of Z = 82-128 and N = 126-192, respectively, is analyzed. The results are compared with those of...

  • Density content of nuclear symmetry energy from nuclear observables. AGRAWAL, B // Pramana: Journal of Physics;Nov2014, Vol. 83 Issue 5, p695 

    The nuclear symmetry energy at a given density measures the energy transferred in converting symmetric nuclear matter into the pure neutron matter. The density content of nuclear symmetry energy remains poorly constrained. Our recent results for the density content of the nuclear symmetry...

  • Observation of meson modification in nuclear matter at KEK-PS. Yokkaichi, S.; Chiba, J.; En’yo, H.; Funahashi, H.; Hamagaki, H.; Ieiri, M.; Ishino, M.; Kanda, H.; Kitaguchi, M.; Mihara, S.; Miyashita, T.; Murakami, T.; Muto, R.; Naruki, M.; Nomachi, M.; Ozawa, K.; Sakuma, F.; Sasaki, O.; Sato, H. D.; Sekimoto, M. // AIP Conference Proceedings;2002, Vol. 610 Issue 1, p551 

    We have measured invariant mass spectra of e[sup +]e[sup -] pairs and K[sup +]K[sup -] pairs in 12-GeV p+A interactions at KEK 12-GeV Proton-Synchrotron (PS). The aim of the present experiment is to detect in-medium modification of vector mesons, which is theoretically predicted as a consequence...

  • Investigation of the ηη System in Ï€—p Interactions at a Momentum of 32.5 GeV/c at the GAMS-4Ï€ Spectrometer. Binon, F.; Blik, A. M.; Donskov, S. V.; Inaba, S.; Kolosov, V. N.; Lednev, A. A.; Lishin, V. A.; Mikhailov, Yu. V.; Peigneux, J. P.; Polyakov, V. A.; Sadovsky, S. A.; Samoilenko, V. D.; Sobol, A. E.; Stroot, J. P.; Sugonyaev, V. P.; Takamatsu, K.; Tsuru, T.; Fujii, I.; Khaustov, G. V.; Shimizu, H. // Physics of Atomic Nuclei;Jun2005, Vol. 68 Issue 6, p960 

    The ηη system produced in charge-exchange π–p interaction at a momentum of 32.5 GeV/c is studied in an experiment performed with the GAMS-4π spectrometer at the 70-GeV accelerator of the Institute for High-Energy Physics (IHEP, Protvino). A partial-wave analysis is performed...

  • Nuclear dependence of charm production. Blanco-Covarrubias, A.; Engelfried, J.; Akgun, U.; Alkhazov, G.; Amaro-Reyes, J.; Atamantchouk, A.; Ayan, A.; Balatz, M.; Bondar, N.; Cooper, P.; Dauwe, L.; Davidenko, G.; Dersch, U.; Dolgolenko, A.; Dzyubenko, G.; Edelstein, R.; Emediato, L.; Endler, A.; Eschrich, I.; Escobar, C. // European Physical Journal C -- Particles & Fields;Dec2009, Vol. 64 Issue 4, p637 

    Using data taken by SELEX during the 1996–1997 fixed target run at Fermilab, we study the production of charmed hadrons on copper and carbon targets with Σ−, p, π−, and π+ beams. Parametrizing the dependence of the inclusive production cross section on the atomic...

  • Strangeness Production at CLAS. Hicks, K. H. // AIP Conference Proceedings;2002, Vol. 619 Issue 1, p510 

    The CLAS detector is a large acceptance spectrometer located at the electron accelerator at Thomas Jefferson National Accelerator Facility. Production of K[sup +] and K[sup *] mesons along with associated hyperons were measured using the CLAS detector at electron beam energies of 2.4-4.4 GeV. In...


Read the Article


Sorry, but this item is not currently available from your library.

Try another library?
Sign out of this library

Other Topics