在HERA测量DIS中的（反）氘核和（反）质子产生
Measurement of (anti)deuteron and (anti)proton production in DIS at HERA
摘要：
用ZEUS探测器在HERA的质心能量为300- 318 GeV，积分亮度为120 pb-1的条件下首次观测到了（反）氘核的深度非弹性散射。测量是在中心快度区进行的，测量范围为0.3<p_T/M<0.7。颗粒率已被提取和解释的聚结模型。（反）氘核产额比（反）质子产额小大约三个数量级，与世界测量结果一致。
英文摘要：
The first observation of (anti)deuterons in deep inelastic scattering at HERA has been made with the ZEUS detector at a centre-of-mass energy of 300--318 GeV using an integrated luminosity of 120 pb-1. The measurement was performed in the central rapidity region for transverse momentum per unit of mass in the range 0.3<p_T/M<0.7. The particle rates have been extracted and interpreted in terms of the coalescence model. The (anti)deuteron production yield is smaller than the (anti)proton yield by approximately three orders of magnitude, consistent with the world measurements.
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