Title: Hunting a light CP-violating Higgs via diffraction at the LHC Show Chinese title

Title: 通过在大型强子对撞机上的衍射探测轻的CP破坏希格斯粒子

Abstract: We study the central diffractive production of the (three neutral) Higgs bosons, with a rapidity gap on either side, in an MSSM scenario with CP-violation. We consider the bb-bar and tautau-bar decay for the light H_1 boson and the four b-jet final state for the heavy H_2 and H_3 bosons, and discuss the corresponding backgrounds. A direct indication of the existence of CP-violation can come from the observation of either an azimuthal asymmetry in the angular distribution of the tagged forward protons (for the exclusive pp -> p+H+p process) or of a sin(2phi) contribution in the azimuthal correlation between the transverse energy flows in the proton fragmentation regions for the process with the diffractive dissociation of both incoming protons (pp -> X+H+Y). We emphasise the advantage of reactions with the rapidity gaps (that is production by the pomeron-pomeron fusion) to probe CP parity and to determine the quantum numbers of the produced central object. Show Chinese abstract

Abstract: 我们研究在具有CP破坏的MSSM情景中，(三个中性)希格斯玻色子的中心衍射产生，其两侧有快速度间隙。 我们考虑轻量H_1玻色子的bb-和tautau-衰变，以及重量H_2和H_3玻色子的四个b-喷注末态，并讨论相应的背景。 CP破坏存在的直接证据可能来自对标签前向质子的角分布中的方位不对称性的观察（对于独占pp -> p+H+p过程），或者来自对两个入射质子的衍射解离过程（pp -> X+H+Y）中质子碎片区域的横向能量流之间的方位相关性中的sin(2phi)贡献的观察。 我们强调具有快速度间隙的反应（即通过pomeron-pomeron融合产生的反应）在探测CP宇称和确定所产生中央物体的量子数方面的优势。