It is demonstrated through an explicit model that the weak high-subenergy tail of the multiperipheral kernel, acting in conjunction with the strong low-subenergy component, is capable of producing a high-ranking output Regge doublet with vacuum quantum numbers. We show that association of the upper doublet member with the $P$ (Pomeranchon) and the lower with the $P^{\prime }$ is consistent with experimental total, elastic, and diffractive dissociation cross sections, as well as with multiplicity of produced pions, and predicts a Pomeranchon slope near $t=0\mathrm{}$ that is roughly half normal. As $t$ becomes negative, the Pomeranchon slope decreases to a small value, while for $t$ positive the slope increases to a normal value, the $P$ trajectory containing the particles usually assigned to the $P^{\prime }$. The latter trajectory has a converse behavior, with small slope for positive $t$ and normal slope at negative $t$. The $P$ and $P^{\prime }$ trajectories thus exchange "normal" and "abnormal" roles near $t=0\mathrm{}$.

• Received 27 February 1970

DOI:https://doi.org/10.1103/PhysRevD.1.3453