Rapidity and transverse momentum dependence of inclusive <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" altimg="si1.gif" overflow="scroll"><mml:mi mathvariant="normal">J</mml:mi><mml:mo stretchy="false">/</mml:mo><mml:mi>ψ</mml:mi></mml:math> production in pp collisions at <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" altimg="si2.gif" overflow="scroll"><mml:msqrt><mml:mi>s</mml:mi></mml:msqrt><mml:mo>=</mml:mo><mml:mn>7</mml:mn><mml:mtext> TeV</mml:mtext></mml:math>

The ALICE experiment at the LHC has studied inclusive J/ production at central and forward rapidities in pp collisions at s = 7 TeV. In this Letter, we report on the first results obtained detecting the J/ through the dilepton decay into e + e -and + -pairs in the rapidity ranges |y| < 0.9 and 2.5 < y < 4, respectively, and with acceptance down to zero p T . In the dielectron channel the analysis was carried out on a data sample corresponding to an integrated luminosity L int = 5.6 nb -1 and the number of signal events is N J/ = 352 32 (stat.) 28 (syst.); the corresponding figures in the dimuon channel are L int = 15.6 nb -1 and N J/ = 1924 77 (stat.) 144 (syst.). The measured production cross sections are J/ (|y| < 0.9) = 10.7 1.0 (stat.) 1.6 (syst.) +1.6 -2.3 (syst.pol.) b and J/ (2.5 < y < 4) = 6.31 0.25 (stat.) 0.76 (syst.) +0.95 -1.96 (syst.pol.) b. The differential cross sections, in transverse momentum and rapidity, of the J/ were also measured.