Abstract

The production of pi(+), pi(-), K(+), K(-), p, and (p) over bar at mid-rapidity has been measured in proton-proton collisions at root s = 900 GeV with the ALICE detector. Particle identification is performed using the specific energy loss in the inner tracking silicon detector and the time projection chamber. In addition, time-of-flight information is used to identify hadrons at higher momenta. Finally, the distinctive kink topology of the weak decay of charged kaons is used for an alternative measurement of the kaon transverse momentum (p(t)) spectra. Since these various particle identification tools give the best separation capabilities over different momentum ranges, the results are combined to extract spectra from p(t) = 100 MeV/c to 2.5 GeV/c. The measured spectra are further compared with QCD-inspired models which yield a poor description. The total yields and the mean pt are compared with previous measurements, and the trends as a function of collision energy are discussed.

Autore Pugliese

• Mastroserio Annalisa

Tutti gli autori

• Aamodt K , Abel N , Abeysekara U , Quintana Aa , Abramyan A , Adamova D , Aggarwal Mm , Rinella Ga , Agocs Ag , Salazar Sa , Ahammed Z , Ahmad A , Ahmad N , Ahn Su , Akimoto R , Akindinov A , Aleksandrov D , Alessandro B , Molina Ra , Alici A , Avina Ea , Alme J , Alt T , Altini V , Altinpinar S , Andrei C , Andronic A , Anelli G , Angelov V , Anson C , Anticic T , Antinori F , Antinori S , Antipin K , Antonczyk D , Antonioli P , Anzo A , Aphecetche L , Appelshauser H , Arcelli S , Arceo R , Arend A , Armesto N , Arnaldi R , Aronsson T , Arsene C , Asryan A , Augustinus A , Averbeck R , Awes Tc , Aysto J , Azmi Md , Bablok S , Bach M , Badala A , Baek Yw , Bagnasco S , Bailhache R , Bala R , Baldisseri A , Baldit A , Ban J , Barbera R , Barnafoldi Gg , Barnby Ls , Barret V , Bartke J , Barile F , Basile M , Basmanov V , Bastid N , Bathen B , Batigne G , Batyunya B , Baumann C , Bearden Ig , 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 Ak , Bianchi L , Bianchi N , Bianchin C , Bielcik J , Bielcikova J , Bilandzic A , Bimbot L , Biolcati E , Blanc A , Blanco F , Blanco F , Blau D , Blume C , Boccioli M , Bock N , Bogdanov A , Boggild H , Bogolyubsky M , Bohm J , Boldizsar L , Bombara M , Bombonati C , Bondila M , Borel H , Borisov A , Bortolin C , Bose S , Bosisio L , Bossu F , Botje M , Bottger S , Bourdaud G , Boyer B , Braun M , Braun Munzinger P , Bravina L , Bregant M , Breitner T , Bruckner G , Brun R , Bruna E , Bruno Ge , Budnikov D , Buesching H , Buncic P , Busch O , Buthelezi Z , Caffarri D , Cai X , Caines H , Calvo E , Camacho E , Camerini P , Campbell M , Roman Vc , Capitani Gp , Romeo Gc , Carena F , Carena W , Carminati F , Diaz Ac , Caselle M , Castellanos Jc , Hernandez Jfc , Catanescu V , Cattaruzza E , Cavicchioli C , Cerello P , Chambert V , Chang B , Chapeland S , Charpy A , Charvet Jl , Chattopadhyay S , Chattopadhyay S , Cherney M , Cheshkov C , Cheynis B , Chiavassa E , Barroso Vc , Chinellato Dd , Chochula P , Choi K , Chojnacki M , Christakoglou P , Christensen Ch , Christiansen P , Chujo T , Chuman F , Cicalo C , Cifarelli L , Cindolo F , Cleymans J , Cobanoglu O , Coffin Jp , Coli S , Colla A , Balbastre Gc , del Valle ZC , Conner Es , Constantin P , Contin G , Contreras Jg , Morales Yc , Cormier Tm , Cortese P , Maldonado Ic , Cosentino Mr , Costa F , Cotallo Me , Crescio E , Crochet P , Cuautle E , Cunqueiro L , Cussonneau J , Dainese A , Dalsgaard Hh , Danu A , Das I , Dash A , Dash S , de Barros GOV , 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 , Denes E , Deppman A , D'Erasmo G , Derkach D , Devaux A , Di Bari D , Di Giglio C , Di Liberto S , Di Mauro A , Di Nezza P , Dialinas M , Diaz L , Diaz R , Dietel T , Divia R , Djuvsland O , Dobretsov V , Dobrin A , Dobrowolski T , Donigus B , Dominguez I , Don Dmm , Dordic O , Dubey Ak , Dubuisson J , Ducroux L , Dupieux P , Majumdar Akd , Majumdar Mrd , Elia D , Emschermann D , Engel H , Enokizono A , Espagnon B , Estienne M , Esumi S , Evans D , Evrard S , Eyyubova G , Fabjan Cw , Fabris D , Faivre J , Falchieri D , Fantoni A , Fasel M , Fateev O , Fearick R , Fedunov A , Fehlker D , Fekete V , Felea D , Fenton Olsen B , Feofilov G , Tellez Af , Ferreiro Eg , Ferretti A , Ferretti R , Figueredo Mas , Filchagin S , Fini R , Fionda Fm , Fiore Em , Floris M , Fodor Z , Foertsch S , Foka P , Fokin S , Formenti F , Fragiacomo E , Fragkiadakis M , Frankenfeld U , Frolov A , Fuchs U , Furano F , Furget C , Girard Mf , Gaardhoje Jj , Gadrat S , Gagliardi M , Gago A , Gallio M , Ganoti P , Ganti Ms , Garabatos C , Trapaga Cg , Gebelein J , Gemme R , Germain M , Gheata A , Gheata M , Ghidini B , Ghosh P , Giraudo G , Giubellino P , Gladysz Dziadus

Titolo volume/Rivista

THE EUROPEAN PHYSICAL JOURNAL. C, PARTICLES AND FIELDS

Anno di pubblicazione

2011

ISSN

1434-6044

ISBN

Non Disponibile

Numero di citazioni Wos

118

Ultimo Aggiornamento Citazioni

Non Disponibile

Numero di citazioni Scopus

45

Ultimo Aggiornamento Citazioni

Non Disponibile

Settori ERC

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Codici ASJC

Non Disponibile