Role of gluons and the quark sea in the proton spin
Petr Zavada
Physics Letters B · 2015
doi:10.1016/j.physletb.2015.11.019 (opens in a new tab)
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Abstract
The real, interacting elementary particle always consists of a ‘bare’ particle and a cloud of virtual particles mediating a self-interaction and/or the bond inside a composite object. In this letter we discuss the question of spin content of the virtual cloud in two different cases: electron and quark. Further, the quark spin is discussed in the context of proton spin, which is generated by the interplay of quarks and virtual gluons. We present a general constraint on the gluon contribution and make a comparison with the experimental data.
Abstract licence: CC BY
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