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Experimental observation of a copious yield of electrons with small transverse momenta in pp collisions at high energies |
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| Authors: | About ScienceDirect |
| Institution: | a University of California at Riverside, Riverside, Cal., USA b CERN, Geneva, Switzerland c Harvard University, Cambridge, Mass., USA d Sektion Physik der Universität, Munich, Germany e Northwestern University, Evanston, Ill., USA |
| Abstract: | Inclusive electron and positron emission have been observed for θcm = 30° and S = 2800 GeV2 at the CERN Intersecting Storage Rings (ISR). Over the transverse momentum interval 0.2 GeV/c < pT < 1.5 GeV/c, electrons and positrons, which are equal in number within the experimental accuracies, appear to grow with respect to other particles (pions) approximately like 1/pT. We are unable to explain their number and pT-dependence in terms of “conventional” mechanisms. |
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