Measurement of (anti)deuteron and (anti)proton production in DIS at HERA
Measurement of (anti)deuteron and (anti)proton production in DIS at HERA
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DOI：
10.1016/j.nuclphysb.2007.06.022
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发表时间：
2007-05
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在HERA的深度非弹性散射中，第一次观测到（反）氘核是用ZEUS探测器在质心能量为300-318 GeV，积分光度为120 pb−1的条件下进行的。测量是在中心快度区进行的，每单位质量的横向动量在0.3<pT/M<0.7范围内。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。
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<pT/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.