M ar 1 99 8 A search for non - qq mesons at the CERN Omega Spectrometer

نویسنده

  • A. Kirk
چکیده

The non-Abelian nature of QCD suggests that particles that have a gluon constituent, such as glueballs or hybrids, should exist. Experiments WA76, WA91 and WA102 have performed a dedicated search for these states in central production using the CERN Omega Spectrometer. Several non-qq candidates have been observed. This paper presents a study of central meson production as a function of the difference in transverse momentum (dP T) of the exchanged particles which shows that undisputed qq mesons are suppressed at small dP T whereas the glueball candidates are enhanced.

برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

ثبت نام

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

منابع مشابه

A search for non-qq mesons in the WA102 experiment at the CERN Omega Spectrometer

A study of central meson production as a function of the difference in transverse momentum (dPT ) of the exchanged particles shows that undisputed qq mesons are suppressed at small dPT whereas the glueball candidates are enhanced. Invited talk at Hadron 97, August 1997

متن کامل

New effects observed in central production by experiment WA102 at the CERN Omega Spectrometer

A partial wave analysis of the centrally produced KK and ππ systems shows that the fJ(1710) has J = 0. In addition, a study of central meson production as a function of the difference in transverse momentum (dPT ) of the exchanged particles shows that undisputed qq mesons are suppressed at small dPT whereas the glueball candidates are enhanced and that the production cross section for different...

متن کامل

ar X iv : a st ro - p h / 98 10 02 1 v 1 1 O ct 1 99 8 A NIR search for high - redshift clusters

We describe our preliminary results on a search for high-redshift (z > 0.5) galaxy clusters using near-infrared photometry obtained with the Omega camera at the 3.5m telescope at Calar Alto.

متن کامل

ar X iv : h ep - p h / 03 08 31 8 v 1 2 9 A ug 2 00 3 On the structure of the scalar and D mesons

The qq spectrum is studied within a chiral constituent quark model. It provides with a good fit of the available experimental data from light (vector and pseudoscalar) to heavy mesons. The new D states measured at different factories are studied. The 0 ++ light mesons are analyzed as q ¯ q pairs or tetraquark structures.

متن کامل

ar X iv : h ep - p h / 99 09 40 2 v 1 1 6 Se p 19 99 1 Properties of scalar – isoscalar mesons from multichannel interaction analysis below 1800 MeV

Scalar-isoscalar mesons are studied using an unitary model in three channels: ππ, KK and an effective 2π2π. All the solutions, fitted to the ππ and KK data, exhibit a wide f0(500), a narrow f0(980) and two relatively narrow resonances, lying on different sheets between 1300 MeV and 1500 MeV. These latter states are similar to the f0(1370) and f0(1500) seen in experiments at CERN. Branching rati...

متن کامل

ذخیره در منابع من


  با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید

برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

ثبت نام

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

عنوان ژورنال:

دوره   شماره 

صفحات  -

تاریخ انتشار 1998