Two-pion Bose-Einstein correlations in pp collisions at sqrt(s)=900 GeV

We report on the measurement of two-pion correlation functions from pp collisions at sqrt(s)=900 GeV performed by the ALICE experiment at the Large Hadron Collider. Our analysis shows an increase of the HBT radius with increasing event multiplicity, in line with other measurements done in particle-...

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Veröffentlicht in:	Physical review. D 2010-07, Vol.82
Hauptverfasser:	Aamodt, K., Abel, N., Abeysekara, U., Abrahantes Quintana, A., Abramyan, A., Adamova, 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., Almaraz Avina, E., 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, Laurent, Appelshauser, 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., Aysto, J., Azmi, M. D., Bablok, S., Bach, M., Badala, A., Baek, Y.W., Bagnasco, S., Bailhache, R., Bala, R., Baldisseri, A., Baldit, A., Ban, J., Barbera, R., Barnafoldi, G. G., Barnby, L. S., Barret, V., Bartke, J., Barile, F., Basile, M., Basmanov, V., Bastid, N., Bathen, B., Batigne, Guillaume, Batyunya, B., Baumann, Cédric, 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., Bielcik, J., Bielcikova, J., Bilandzic, A., Bimbot, L., Biolcati, E., Blanc, A., Blanco, F.
Format:	Artikel
Sprache:	eng
Schlagworte:	High Energy Physics - Experiment Physics
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Zusammenfassung:	We report on the measurement of two-pion correlation functions from pp collisions at sqrt(s)=900 GeV performed by the ALICE experiment at the Large Hadron Collider. Our analysis shows an increase of the HBT radius with increasing event multiplicity, in line with other measurements done in particle- and nuclear collisions. Conversely, the strong decrease of the radius with increasing transverse momentum, as observed at RHIC and at Tevatron, is not manifest in our data.
ISSN:	2470-0010 2470-0029
DOI:	10.1103/PhysRevD.82.052001