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Transverse momentum spectra of charged particles in proton-proton collisions at s=900 GeV with ALICE at the LHC
Authors
K. Aamodt Abel, N. Abeysekara, U. Abrahantes Quintana, A. Abramyan, A. Adamová, D. Aggarwal, M.M. Aglieri Rinella, G. Agocs, A.G. Aguilar Salazar, S. Ahammed, Z. Ahmad, A. Ahmad, N. Ahn, S.U. Akimoto, R. Akindinov, A. Aleksandrov, D. Alessandro, B. Alfaro Molina, R. Alici, A. Almaráz Aviña, E. Alme, J. Alt, T. Altini, V. Altinpinar, S. Andrei, C. Andronic, A. Anelli, G. Angelov, V. Anson, C. Antičić, T. Antinori, F. Antinori, S. Antipin, K. Antończyk, D. Antonioli, P. Anzo, A. Aphecetche, L. Appelshäuser, H. Arcelli, S. Arceo, R. Arend, A. Armesto, N. Arnaldi, R. Aronsson, T. Arsene, I.C. Asryan, A. Augustinus, A. Averbeck, R. Awes, T.C. Äystö, J. Azmi, M.D. Bablok, S. Bach, M. Badalà, A. Baek, Y.W. Bagnasco, S. Bailhache, R. Bala, R. Baldisseri, A. Baldit, A. Bán, J. Barbera, R. Barnaföldi, G.G. Barnby, L. Barret, V. Bartke, J. Barile, F. Basile, M. Basmanov, V. Bastid, N. Bathen, B. Batigne, G. Batyunya, B. Baumann, C. Bearden, I.G. Becker, B. Belikov, I. Bellwied, R. Belmont-Moreno, E. Belogianni, A. Benhabib, L. Beole, S. Berceanu, I. Bercuci, A. Berdermann, E. Berdnikov, Y. Betev, L. Bhasin, A. Bhati, A.K. Bianchi, L. Bianchi, N. Bianchin, C. Bielčík, J. Bielčíková, J. Bilandzic, A. Bimbot, L. Biolcati, E. Blanc, A. Blanco, F. Blanco, F. Blau, D. Blume, C. Boccioli, M. Bock, N. Bogdanov, A. Bøggild, H. Bogolyubsky, M. Bohm, J. Boldizsár, L. Bombara, M. Bombonati, C. Bondila, M. Borel, H. Borisov, A. Bortolin, C. Bose, S. Bosisio, L. Bossú, F. Botje, M. Böttger, S. Bourdaud, G. Boyer, B. Braun, M. Braun-Munzinger, P. Bravina, L. Bregant, M. Breitner, T. Bruckner, G. Brun, R. Bruna, E. Bruno, G.E. Budnikov, D. Buesching, H. Buncic, P. Busch, O. Buthelezi, Z. Caffarri, D. Cai, X. Caines, H. Calvo, E. Camacho, E. Camerini, P. Campbell, M. Canoa Roman, V. Capitani, G.P. Cara Romeo, G. Carena, F. Carena, W. Carminati, F. Casanova Díaz, A. Caselle, M. Castillo Castellanos, J. Castillo Hernandez, J.F. Catanescu, V. Cattaruzza, E. Cavicchioli, C. Cerello, P. Chambert, V. Chang, B. Chapeland, S. Charpy, A. Charvet, J.L. Chattopadhyay, S. Chattopadhyay, S. Cherney, M. Cheshkov, C. Cheynis, B. Chiavassa, E. Chibante Barroso, V. Chinellato, D.D. Chochula, P. Choi, K. Chojnacki, M. Christakoglou, P. Christensen, C.H. Christiansen, P. Chujo, T. Chuman, F. Cicalo, C. Cifarelli, L. Cindolo, F. Cleymans, J. Cobanoglu, O. Coffin, J.-P. Coli, S. Colla, A. Conesa Balbastre, G. Conesa del Valle, Z. Conner, E.S. Constantin, P. Contin, G. Contreras, J.G. Corrales Morales, Y. Cormier, T.M. Cortese, P. Cortés Maldonado, I. Cosentino, M.R. Costa, F. Cotallo, M.E. Crescio, E. Crochet, P. Cuautle, E. Cunqueiro, L. Cussonneau, J. Dainese, A. Dalsgaard, H.H. Danu, A. Das, I. Dash, A. Dash, S. de Barros, G.O.V. De Caro, A. de Cataldo, G. de Cuveland, J. De Falco, A. De Gaspari, M. de Groot, J. De Gruttola, D. De Marco, N. De Pasquale, S. De Remigis, R. de Rooij, R. de Vaux, G. Delagrange, H. Delgado, Y. Dellacasa, G. Deloff, A. Demanov, V. Dénes, E. Deppman, A. D&apos
Publication date
1 January 2010
Publisher
Abstract
The inclusive charged particle transverse momentum distribution is measured in proton-proton collisions at s=900 GeV at the LHC using the ALICE detector. The measurement is performed in the central pseudorapidity region (|η|<0.8) over the transverse momentum range 0.15<pT<10 GeV/c. The correlation between transverse momentum and particle multiplicity is also studied. Results are presented for inelastic (INEL) and non-single-diffractive (NSD) events. The average transverse momentum for |η|<0.8 is 〈pT〉INEL=0.483±0.001 (stat.)±0.007 (syst.) GeV/c and 〈pT〉NSD=0.489±0.001 (stat.)±0.007 (syst.) GeV/c, respectively. The data exhibit a slightly larger 〈pT〉 than measurements in wider pseudorapidity intervals. The results are compared to simulations with the Monte Carlo event generators PYTHIA and PHOJET. © 2010
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