旋转弦与PDG介子的对抗
Rotating strings confronting PDG mesons
摘要：
我们重新审视了介子作为旋转弦与质量端点的模型，并面对它与介子谱。我们在（J，M2）和（n，M2）平面上观察Regge轨迹，其中J和n分别是角动量和径向激发数。我们从仅由u和d夸克组成的状态开始，继续到涉及s和c夸克的轨迹，最后分析观测到的最重的b-bbar介子的轨迹。端点质量提供了轻介子的线性Regge轨迹与重介子的线性行为之间的所需过渡，所有这些都在同一个简单模型的范围内。从我们的拟合中，我们提取了夸克端点质量，Regge斜率（弦张力）和量子截距的值。该模型还允许通用拟合，其中使用单个Regge斜率值，我们拟合涉及u，d，s和c夸克的所有（J，M2）轨迹。我们包括了J和n中高级介子的预言列表。
英文摘要：
We revisit the model of mesons as rotating strings with massive endpoints and confront it with meson spectra. We look at Regge trajectories both in the (J,M2) and (n,M2) planes, where J and n are the angular momentum and radial excitation number respectively. We start from states comprised of u and d quarks alone, move on to trajectories involving s and c quarks, and finally analyze the trajectories of the heaviest observed b-bbar mesons. The endpoint masses provide the needed transition between the linear Regge trajectories of the light mesons to the deviations from linear behavior encountered for the heavier mesons, all in the confines of the same simple model. From our fits we extract the values of the quark endpoint masses, the Regge slope (string tension) and quantum intercept. The model also allows for a universal fit where with a single value of the Regge slope we fit all the (J,M2) trajectories involving u, d, s, and c quarks. We include a list of predictions for higher mesons in both J and n.
机构、总结、中文摘要均由AI分析而来，可能存在错误，请以论文正文为准。
