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32 results on '"Mahalanabis, J."'

11. Scattering length expansion of the coupled channels $$\bar pp \to \bar \Lambda \Lambda$$ and $$\bar \Lambda \Lambda \to \bar \Lambda \Lambda$$ near the Λ production threshold.

Author

Schneider-Neureither, A., Pirner, H., Kerbikov, B., and Mahalanabis, J.

Abstract

We fit the scattering lengths in the triplet s-, p- and d- waves for the two channels $$\bar pp \to \bar \Lambda \Lambda$$ and $$\bar \Lambda \Lambda \to \bar \Lambda \Lambda$$ near the Λ production threshold to the differential cross section $$\frac{{d\sigma }}{{d\Omega }}(\bar pp \to \bar \Lambda \Lambda )$$ and to the polarization P. [ABSTRACT FROM AUTHOR]

Published
1992
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12. Coupled-channel effective-range expansion of low energy N¯Nscattering

Author

Mahalanabis, J., Pirner, H.J., and Shibata, T.-A.

Abstract

The effective-range expansion is applied to the N¯Ninteractions at low energy. The coupled-channel formula for p¯pand n¯ninteractions is composed of the scattering length and the effective range for s-wave, and the scattering volume and the effective range for p-wave. Experimental data on N¯Ncross-sections below 300 MeV/cas well as the energy shift and the width of antiprotonic hydrogen are fitted. The s-wave scattering length and the p-wave effective range are determined with the presently available data although other parameters are strongly correlated in the fit.

Published
1988
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13. Scattering length expansion of the coupled channels <img src="/fulltext-image.asp?format=htmlnonpaginated&src=R1K1617430640141_html\10050_2005_Article_BF01303026_TeX2GIFIE1.gif" border="0" alt=" $$\bar pp \to \bar \Lambda \Lambda$$ " /> and <img src="/fulltext-image.asp?format=htmlnonpaginated&src=R1K1617430640141_html\10050_2005_Article_BF01303026_TeX2GIFIE2.gif" border="0" alt=" $$\bar \Lambda \Lambda \to \bar \Lambda \Lambda$$ " /> near theΛ production threshold

Author

Schneider-Neureither, A., Pirner, H., Kerbikov, B., and Mahalanabis, J.

Abstract

We fit the scattering lengths in the triplets-,p- andd- waves for the two channels " and " near theΛ production threshold to the differential cross section " and to the polarization P.

Published
1992
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22. Updating the effective range expansion of low-energy N $$\bar N$$ -scattering.

Author

Pirner, H., Kerbikov, B., and Mahalanabis, J.

Abstract

Low energy N¯N scattering is reanalyzed using the new data on annihilation cross-sections from CERN [1], the ¯np-absorption measurement from BNL [2] and the annihilation width of the 2 p state in antiprotonic hydrogen [3]. Imposing the condition that the imaginary part of the effective range is negative we find low energy scattering parameters which interpolate between the existing ITEP [4] and CERN/Heidelberg [5] values. [ABSTRACT FROM AUTHOR]

Published
1991
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23. Updating the effective range expansion of low-energyN <img src="/fulltext-image.asp?format=htmlnonpaginated&src=P6736V671855HK8L_html\10050_2005_Article_BF01279121_TeX2GIFIE1.gif" border="0" alt=" $$\bar N$$ " />-scattering

Author

Pirner, H. J., Kerbikov, B., and Mahalanabis, J.

Abstract

Low energyN¯N scattering is reanalyzed using the new data on annihilation cross-sections from CERN [1], the¯np-absorption measurement from BNL [2] and the annihilation width of the 2p state in antiprotonic hydrogen [3]. Imposing the condition that the imaginary part of the effective range is negative we find low energy scattering parameters which interpolate between the existing ITEP [4] and CERN/Heidelberg [5] values.

Published
1991
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