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Hi all. I was lucky enough to find this forum through a search engine and am very happy to be one of the latest new members. I look forward to contributing any knowledge that I may have and to receiving help and advice that I may need. Thank you. 
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Re: Happy to be a new member on a great forum
Welcome MooMoo :beagle:"Although scalar fields are Lorentz scalars, they may transform nontrivially under other symmetries, such as flavour or isospin. For example, the pion is invariant under the restricted Lorentz group, but is an isospin triplet (meaning it transforms like a three component vector under the SU(2) isospin symmetry). Furthermore, it picks up a negative phase under parity inversion, so it transforms nontrivially under the full Lorentz group; such particles are called pseudoscalar rather than scalar. Most mesons are pseudoscalar particles." (finally explained to a captivated Celestine by Professor Brian Cox on Wednesday 27th June 2012
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