We ha
ve pe
rfo
rmed the fi
rst measu
rement of the cohe
rent
rc">rmulatext stixSupport mathImg" data-mathURL="/science?_ob=MathURL&_method=retrieve&_eid=1-s2.0-S0370269315007996&_mathId=si2.gif&_user=111111111&_pii=S0370269315007996&_rdoc=1&_issn=03702693&md5=4eb9c4bf7b26db08ce238b914ab9cc4f" title="Click to view the MathML source">ψ(2S)r hidden"> photo-p
roduction c
ross section in ult
ra-pe
riphe
ral Pb
![]()
rde
r="0" alt="single bond" data-inlimg="/entities/sbnd" s
rc="/sd/g
rey_pxl.gif" class="glyphImg imgLazyJSB">
ript>
rder="0" alt="single bond" src="http://cdn.els-cdn.com/sd/entities/sbnd" class="glyphImg">ript>Pb collisions at the LHC. This cha
rmonium excited state is
reconst
ructed
via the
rc">rmulatext stixSupport mathImg" data-mathURL="/science?_ob=MathURL&_method=retrieve&_eid=1-s2.0-S0370269315007996&_mathId=si3.gif&_user=111111111&_pii=S0370269315007996&_rdoc=1&_issn=03702693&md5=acf17e94b2e8ab3faf723024574d3a0c" title="Click to view the MathML source">ψ(2S)→l+l−r hidden"> and
rc">rmulatext stixSupport mathImg" data-mathURL="/science?_ob=MathURL&_method=retrieve&_eid=1-s2.0-S0370269315007996&_mathId=si4.gif&_user=111111111&_pii=S0370269315007996&_rdoc=1&_issn=03702693&md5=27f45ede993743be728d5e6dc806a374" title="Click to view the MathML source">ψ(2S)→J/ψπ+π−r hidden"> decays, whe
re the
rc">rmulatext stixSupport mathImg" data-mathURL="/science?_ob=MathURL&_method=retrieve&_eid=1-s2.0-S0370269315007996&_mathId=si12.gif&_user=111111111&_pii=S0370269315007996&_rdoc=1&_issn=03702693&md5=35d158d9dee1dcbfb8048751217adb53" title="Click to view the MathML source">J/ψr hidden"> decays into two leptons. The analysis is based on an e
vent sample co
rresponding to an integ
rated luminosity of about
rc">rmulatext stixSupport mathImg" data-mathURL="/science?_ob=MathURL&_method=retrieve&_eid=1-s2.0-S0370269315007996&_mathId=si6.gif&_user=111111111&_pii=S0370269315007996&_rdoc=1&_issn=03702693&md5=b642987941049211f5889a178951482f" title="Click to view the MathML source">22 μb−1r hidden">. The c
ross section fo
r cohe
rent
rc">rmulatext stixSupport mathImg" data-mathURL="/science?_ob=MathURL&_method=retrieve&_eid=1-s2.0-S0370269315007996&_mathId=si2.gif&_user=111111111&_pii=S0370269315007996&_rdoc=1&_issn=03702693&md5=4eb9c4bf7b26db08ce238b914ab9cc4f" title="Click to view the MathML source">ψ(2S)r hidden"> p
roduction in the
rapidity inte
rval
rc">rmulatext stixSupport mathImg" data-mathURL="/science?_ob=MathURL&_method=retrieve&_eid=1-s2.0-S0370269315007996&_mathId=si7.gif&_user=111111111&_pii=S0370269315007996&_rdoc=1&_issn=03702693&md5=c9a3c76e091b78a619cac69442e18dbb" title="Click to view the MathML source">−0.9<y<0.9r hidden"> is
rc">rce" class="mathImg" data-mathURL="/science?_ob=MathURL&_method=retrieve&_eid=1-s2.0-S0370269315007996&_mathId=si8.gif&_user=111111111&_pii=S0370269315007996&_rdoc=1&_issn=03702693&md5=2de2471eb1571c8271b16881c6094372">
rce" title="View the MathML source" src="/sd/grey_pxl.gif" data-inlimgeid="1-s2.0-S0370269315007996-si8.gif">ript>
rder="0" style="vertical-align:bottom" width="253" alt="View the MathML source" title="View the MathML source" src="http://origin-ars.els-cdn.com/content/image/1-s2.0-S0370269315007996-si8.gif">ript>r hidden">. The
rc">rmulatext stixSupport mathImg" data-mathURL="/science?_ob=MathURL&_method=retrieve&_eid=1-s2.0-S0370269315007996&_mathId=si2.gif&_user=111111111&_pii=S0370269315007996&_rdoc=1&_issn=03702693&md5=4eb9c4bf7b26db08ce238b914ab9cc4f" title="Click to view the MathML source">ψ(2S)r hidden"> to
rc">rmulatext stixSupport mathImg" data-mathURL="/science?_ob=MathURL&_method=retrieve&_eid=1-s2.0-S0370269315007996&_mathId=si12.gif&_user=111111111&_pii=S0370269315007996&_rdoc=1&_issn=03702693&md5=35d158d9dee1dcbfb8048751217adb53" title="Click to view the MathML source">J/ψr hidden"> cohe
rent c
ross section
ratio is
rc">rce" class="mathImg" data-mathURL="/science?_ob=MathURL&_method=retrieve&_eid=1-s2.0-S0370269315007996&_mathId=si9.gif&_user=111111111&_pii=S0370269315007996&_rdoc=1&_issn=03702693&md5=87cca19cc70266b5e479d83fa58f1b7e">
rce" title="View the MathML source" src="/sd/grey_pxl.gif" data-inlimgeid="1-s2.0-S0370269315007996-si9.gif">ript>
rder="0" style="vertical-align:bottom" width="129" alt="View the MathML source" title="View the MathML source" src="http://origin-ars.els-cdn.com/content/image/1-s2.0-S0370269315007996-si9.gif">ript>r hidden">. The obtained
results a
re compa
red to p
redictions f
rom theo
retical models.