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  1. No Access

    Article

    Search for a signal on QCD critical point in central nucleusnucleus collisions

    We discuss that the QCD critical point could appear in central collisions in percolation cluster. We suggest to use the effects of nuclear transparency and that of the light nuclear production to identify the ...

    M. K. Suleymanov, E. U. Khan, K. Ahmed, M. Q. Haseeb, F. Tahir… in Indian Journal of Physics (2011)

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    Chapter

    Time-Resolved Spectroscopy of High Excited States of Alkali Dimers

    Alkali dimers are also interesting and important since they are thought to undergo primarily excimer like triplet-triplet electronic transitions in which the lower triplet state is repulsive [1, 2]. Because of...

    K. Ahmed, T. Weyh, E. Mehdizadeh, W. Demtröder in Ultrafast Processes in Spectroscopy (1996)

  3. No Access

    Article

    Lifetimes, population and deactivation mechanisms of theC 1 ∏ u , 23 ∏ g and 21∑ u + states of Na2

    The UV and visible fluorescence of Na2 molecules in a heat-pipe, excited by the frequency doubled radiation of a tunable mode-locked cavity-dumped cw dye laser was observed through a monochromator, using time-res...

    E. Mehdizadeh, K. Ahmed, W. Demtröder in Applied Physics B (1994)

  4. No Access

    Article

    Ultraviolet bands of Na2 and K2

    The ultraviolet spectra of Na2 and K2 molecules have been investigated. These studies were made in absorption in the second order of a 3.4 m Ebert Spectrograph with a reciprocal dispersion of 2.6 Å/mm. A number o...

    M. Rafi, K. Ahmed, I. A. Khan, M. R. Husain in Zeitschrift für Physik D Atoms, Molecules … (1991)

  5. No Access

    Article

    An ultraviolet system of Na2 at 2700 Å

    The spectrum of Na2 from 2600 Å to 2750 Å has been recorded in absorption in the second order of a 3.4 m Ebert spectrograph with a reciprocal dispersion of 2.6 Å/mm. The vibrational structure appears to the highe...

    M. Rafi, K. Ahmed, I. A. Khan, M. R. Husain in Il Nuovo Cimento D (1991)

  6. No Access

    Article

    Dimensional regularization and infra-red divergence

    K. Ahmed, A. Qadir in Lettere al Nuovo Cimento (1971-1985) (1974)

  7. No Access

    Article

    The pomeron as a Regge cut inN N→N N* (1+/2, 1400 MeV)(1+/2, 1400 MeV)

    K. Ahmed, M. B. Bari in Lettere al Nuovo Cimento (1971-1985) (1971)

  8. No Access

    Article

    Coupling constants in the (A1ρπ) system and helicity conservation

    K. Ahmed, M. S. K. Razmi in Lettere al Nuovo Cimento (1971-1985) (1971)

  9. No Access

    Article

    Vector mesons and complex angular momentum—II

    It is shown that the leading singularities in the complex angular momentum plane for the processπ + π −→π + π − medi...

    K. Ahmed, M. Martinis in Il Nuovo Cimento A (1965)

  10. No Access

    Article

    Vector mesons and complex angular momentum — II

    It is shown that the leading singularities in the complex angular momentum plane for the process π+π−→π+π− mediated by the vector mesons occur nearl=1. Only sixth-order Feynman graphs have been considered. One th...

    K. Ahmed, M. Martinis in Il Nuovo Cimento (1955-1965) (1965)

  11. No Access

    Article

    Vector mesons and complex angular momentum

    The analytic behaviour in the complex angular momentum plane, of the amplitude for a vector meson coupled to a scalar « nucléon » through a conserved current is examined. The graph with the exchange of two vec...

    M. Martinis, K. Ahmed in Il Nuovo Cimento (1955-1965) (1965)