Abstract
It is remarked that the (μe)-events as well as the jet-structure observed at SPEAR may have their origin in the pair-production and decays of integer-charge quarks. Several experimental distinctions between quark versus heavy lepton-hypotheses for the (μe)-events are noted.
Supported in part by NSF Grant No. GP 43662x.
This is a preview of subscription content, log in via an institution to check access.
Access this chapter
Tax calculation will be finalised at checkout
Purchases are for personal use only
Preview
Unable to display preview. Download preview PDF.
References and Footnotes
J. C. Pati and Abdus Salam, Phys. Rev. Lett. 31, 661 (1973); Phys. Rev. D10, 275 (1974).
For recent estimates and detailed discussions, see J. C. Pati, S. Sakakibara and Abdus Salam (Trieste Preprint IC/75/93, To appear) and also W. R. Franklin, Nucl. Phys. B91, 160 (1975).
If no such light colored vector mesons exist, the SLAC events would not relevant for quark-decays. One would then need to institute a different type of search for quark-decays (see second paper of Ref. 2).
M. L. Perl et al., Phys. Rev. Lett. 35 1489 (1975).
G. Hanson et al. Phys. Rev. Lett. 35, 1609 (1975).
The discussions are not altered if we introduce new flavors and heavy leptons through the mirror set,the symmetry being SU(4), which leads to a vector-liketheory. (See e.g. J. C. Pati and Abdus Salam, Physics Lett. 58B, 333 (1975) and R. N. Mohapatra and J. C. Pati, Phys. Rev. Dll, 2558 (1975)) or alternatively if the prodigal model is correct (see Ref. 1).
J. C. Pati and Abdus Salam, Phys. Rev. Lett. 36, 11 (1976); Univ. of Md. Tech. Rep. 76–061 (To be published); G. Rajesekharan and P. Roy (TIFR preprints TH/75–38 and TH/75–42).
The (Trey) and (Key)-modes are forbidden to 0(a,) and 0(GF) respectively in the matrix element compared to the allowed modes. See J. C. Pati and Abdus Salam, Univ. of Md. Tech. Rep. 76–061 for detail:.
Following asymptotic freedom or light cone analysis.
Suppression of Fig. 2 is subject to the assumption that the emission of a composite particle (e.g. pion) from the quark-line is associated with a form-factor depending upon the loop-momentum k (e.g. fqq (k2) m2/(k2-m2); m-m or mV), which, if present, makes Fig. 2 over-convergent. Details of these arguments are given in the first paper of Ref. 2.
We expect a small difference (x 200 to 300 MeV) between the thresholds for pair-production of n and X-quarks.
Note that SPEAR data (Ref. 4) is consistent with the (pe)-events arising partly from three and partly from two-body decays of the parent particles.
This question is under study.
It appears to us that the familiar parton model considerations do not provide a convincing explanation of the jet structure, unless real quark-pairs are produced as suggested here.
We thank G. A. Snow for urging this test.
See invited talks by R. Schwitters and F. Gilman, Proceedings of the International Symposium on Lepton and Photon Interactions, Stanford (August, 21, 1975 ).
This does not of course preclude single (and pair)-production of charmed particles by neutrino (and hadronic) interactions. It is conceivable that e e+-annihilation is much more efficient in producing real qq-pairs than hadron-hadron collisions or neutrino-interactions simply because the “recombination” of quarks into hadrons is more likely in the multiquark environment of a disrupting hadron. This requires further study.
This may alter with the “Prodigal” model (Ref.l).
Assuming separate muon and electron number conservations and neglecting decay modes with branching ratios 0(a2).
See for example L. Lederman, Proceedings of the International Symposium on Lepton and Photon Interactions, Stanford (August 21, 1975 ).
For heavy leptons, we expect a(L+L-) 10-38 cm2 and U(L10-34 to 10-35 cm2 for mL 2 GeV.
The question of consistency of light colored vector mesons (Mv’ 1 to 2 GeV) with existing experiments and the means of searching fox these narrow mesons (e.g. via e e -annihilation and photo-production) are discussed in detail in a forthcoming preprint by J. C. Pati, J. Sucher and C. H. Woo.
Author information
Authors and Affiliations
Editor information
Editors and Affiliations
Rights and permissions
Copyright information
© 1976 Plenum Press, New York
About this chapter
Cite this chapter
Pati, J.C., Salam, A., Sakakibara, S. (1976). Are Slac (μe)-Events Decay Products of Integer Charge Quarks?. In: Perlmutter, A. (eds) New Pathways in High-Energy Physics I. Studies in the Natural Sciences, vol 10. Springer, Boston, MA. https://doi.org/10.1007/978-1-4684-2922-0_12
Download citation
DOI: https://doi.org/10.1007/978-1-4684-2922-0_12
Publisher Name: Springer, Boston, MA
Print ISBN: 978-1-4684-2924-4
Online ISBN: 978-1-4684-2922-0
eBook Packages: Springer Book Archive