CHERENKOV GLUONS (PREDICTIONS AND PROPOSALS)
نویسندگان
چکیده
منابع مشابه
CHERENKOV GLUONS (predictions and proposals)
The coherent hadron production analogous to Cherenkov radiation of photons gives rise to the ring-like events. Being projected on the ring diameter they produce the two-bump structure recently observed for the away-side jets at RHIC. The position of the peaks and their height determine such properties of the hadronic medium as its nuclear refractive index, the parton density, the free path leng...
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Beside comparatively low energy Cherenkov gluons observed at RHIC, there could be high energy gluons at LHC, related to the high energy region of positive real part of the forward scattering amplitude. In both cases they give rise to particles emitted along some cone. The characteristics of the cones produced by these two types of gluons are different. Therefore different experiments are needed...
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Similar to electromagnetic forces, strong interactions might induce such collective effects as Cherenkov and Mach waves. Their conical structure would be responsible for specific ring-like events. The theoretical and experimental arguments in favor of these phenomena are discussed and their most important features are described.
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We present a complete calculation of the cross section for neutralino annihilation into the two-gluon final state. This channel can be quite important for the phenomenology of neutralino annihilation due to the well-known helicity suppression of neutralino annihilation into light quarks and leptons. In addition, we calculate the cross section for annihilation of neutralinos into a gluon and qua...
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Recent experiments performed by the HERMES collaboration have demonstrated that a small but nonzero Sivers mechanism for transverse single-spin asymmetries exists [1]. Although the presence of such effects has been conjectured long ago [2], only more recent studies [3] have clarified the role of final and initial state interactions as a source of such T-odd asymmetries at the parton level and h...
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ژورنال
عنوان ژورنال: International Journal of Modern Physics A
سال: 2007
ISSN: 0217-751X,1793-656X
DOI: 10.1142/s0217751x07036920