Search for a hypothetical gauge boson and dark photons in charmonium transitions
Anonymous, M. N. Achasov, P. Adlarson, X. C. Ai et autres
We report a direct search for a new gauge boson, <a:math xmlns:a="http://www.w3.org/1998/Math/MathML" display="inline"> <a:mi>X</a:mi> </a:math> , with a mass of <c:math xmlns:c="http://www.w3.org/1998/Math/MathML" display="inline"> <c:mn>17</c:mn> <c:mtext> </c:mtext> <c:mtext> </c:mtext> <c:mi>MeV</c:mi> <c:mo>/</c:mo> <c:msup> <c:mi>c</c:mi> <c:mn>2</c:mn> </c:msup> </c:math> , which could explain the anomalous excess …
ru, se, cn, de, it, pl, mn, us, tr, kr, gb (code pays fourni par la source)
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Physical review. D/Physical review. D.