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Longitudinal double spin asymmetries in single hadron quasi-real photoproduction at high p<sub>Tsub>
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We measured the longitudinal double spin asymmetries <span id="mmlsi1" class="mathmlsrc"><span class="formulatext stixSupport mathImg" data-mathURL="/science?_ob=MathURL&_method=retrieve&_eid=1-s2.0-S0370269315009831&_mathId=si1.gif&_user=111111111&_pii=S0370269315009831&_rdoc=1&_issn=03702693&md5=d8ef50d101a6841c643ebcd2b7f8f46b" title="Click to view the MathML source">A<sub>m>LLm>sub>span><span class="mathContainer hidden"><span class="mathCode"><math altimg="si1.gif" overflow="scroll"><msub><mrow><mi>Ami>mrow><mrow><mi mathvariant="italic">LLmi>mrow>msub>math>span>span>span> for single hadron muoproduction off protons and deuterons at photon virtuality <span id="mmlsi2" class="mathmlsrc">source" class="mathImg" data-mathURL="/science?_ob=MathURL&_method=retrieve&_eid=1-s2.0-S0370269315009831&_mathId=si2.gif&_user=111111111&_pii=S0370269315009831&_rdoc=1&_issn=03702693&md5=a020c114387435bd81076234e466c789">mg class="imgLazyJSB inlineImage" height="16" width="103" alt="View the MathML source" title="View the MathML source" src="/sd/grey_pxl.gif" data-inlimgeid="1-s2.0-S0370269315009831-si2.gif">script>mg height="16" border="0" style="vertical-align:bottom" width="103" alt="View the MathML source" title="View the MathML source" src="http://origin-ars.els-cdn.com/content/image/1-s2.0-S0370269315009831-si2.gif">script><span class="mathContainer hidden"><span class="mathCode"><math altimg="si2.gif" overflow="scroll"><msup><mrow><mi>Qmi>mrow><mrow><mn>2mn>mrow>msup><mo><mo><mn>1mn><mspace width="0.25em">mspace><msup><mrow><mo stretchy="false">(mo><mtext>GeVmtext><mo stretchy="false">/mo><mi>cmi><mo stretchy="false">)mo>mrow><mrow><mn>2mn>mrow>msup>math>span>span>span> for transverse hadron momenta <span id="mmlsi3" class="mathmlsrc"><span class="formulatext stixSupport mathImg" data-mathURL="/science?_ob=MathURL&_method=retrieve&_eid=1-s2.0-S0370269315009831&_mathId=si3.gif&_user=111111111&_pii=S0370269315009831&_rdoc=1&_issn=03702693&md5=5e97d9bb8f65864d9c794267809e2ee9" title="Click to view the MathML source">p<sub>Tsub>span><span class="mathContainer hidden"><span class="mathCode"><math altimg="si3.gif" overflow="scroll"><msub><mrow><mi>pmi>mrow><mrow><mi>Tmi>mrow>msub>math>span>span>span> in the range <span id="mmlsi4" class="mathmlsrc"><span class="formulatext stixSupport mathImg" data-mathURL="/science?_ob=MathURL&_method=retrieve&_eid=1-s2.0-S0370269315009831&_mathId=si4.gif&_user=111111111&_pii=S0370269315009831&_rdoc=1&_issn=03702693&md5=421aa44e0629cfda44c0962cf700075d" title="Click to view the MathML source">1 GeV/cspan><span class="mathContainer hidden"><span class="mathCode"><math altimg="si4.gif" overflow="scroll"><mn>1mn><mtext> mtext><mtext>GeVmtext><mo stretchy="false">/mo><mi>cmi>math>span>span>span> to <span id="mmlsi5" class="mathmlsrc"><span class="formulatext stixSupport mathImg" data-mathURL="/science?_ob=MathURL&_method=retrieve&_eid=1-s2.0-S0370269315009831&_mathId=si5.gif&_user=111111111&_pii=S0370269315009831&_rdoc=1&_issn=03702693&md5=bb62ebefe48818c71f54f13e91b2d6d4" title="Click to view the MathML source">4 GeV/cspan><span class="mathContainer hidden"><span class="mathCode"><math altimg="si5.gif" overflow="scroll"><mn>4mn><mtext> mtext><mtext>GeVmtext><mo stretchy="false">/mo><mi>cmi>math>span>span>span>. They were determined using COMPASS data taken with a polarised muon beam of <span id="mmlsi6" class="mathmlsrc"><span class="formulatext stixSupport mathImg" data-mathURL="/science?_ob=MathURL&_method=retrieve&_eid=1-s2.0-S0370269315009831&_mathId=si6.gif&_user=111111111&_pii=S0370269315009831&_rdoc=1&_issn=03702693&md5=f2da6c912a886a68b003e2c2c8d431fa" title="Click to view the MathML source">160 GeV/cspan><span class="mathContainer hidden"><span class="mathCode"><math altimg="si6.gif" overflow="scroll"><mn>160mn><mtext> mtext><mtext>GeVmtext><mo stretchy="false">/mo><mi>cmi>math>span>span>span> or <span id="mmlsi7" class="mathmlsrc"><span class="formulatext stixSupport mathImg" data-mathURL="/science?_ob=MathURL&_method=retrieve&_eid=1-s2.0-S0370269315009831&_mathId=si7.gif&_user=111111111&_pii=S0370269315009831&_rdoc=1&_issn=03702693&md5=7afb10f829b49bba54d4ef703f4aa8d6" title="Click to view the MathML source">200 GeV/cspan><span class="mathContainer hidden"><span class="mathCode"><math altimg="si7.gif" overflow="scroll"><mn>200mn><mtext> mtext><mtext>GeVmtext><mo stretchy="false">/mo><mi>cmi>math>span>span>span> impinging on polarised <sup>6sup>LiD or NH<sub>3sub> targets. The experimental asymmetries are compared to next-to-leading order pQCD calculations, and are sensitive to the gluon polarisation Δm>G  m> inside the nucleon in the range of the nucleon momentum fraction carried by gluons <span id="mmlsi8" class="mathmlsrc"><span class="formulatext stixSupport mathImg" data-mathURL="/science?_ob=MathURL&_method=retrieve&_eid=1-s2.0-S0370269315009831&_mathId=si8.gif&_user=111111111&_pii=S0370269315009831&_rdoc=1&_issn=03702693&md5=8f7210d9b46b8709b2f07c6976818251" title="Click to view the MathML source">0.05<x<sub>gsub><0.2span><span class="mathContainer hidden"><span class="mathCode"><math altimg="si8.gif" overflow="scroll"><mn>0.05mn><mo><mo><msub><mrow><mi>xmi>mrow><mrow><mi>gmi>mrow>msub><mo><mo><mn>0.2mn>math>span>span>span>.

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