Transverse single spin and azimuthal asymmetries in hadronic collisions at PHENIX

被引：0

作者：

Kleinjan, David ^{[1
]}

机构：

[1] Univ Calif Riverside, Riverside, CA 92521 USA

来源：

4TH INTERNATIONAL WORKSHOP ON TRANSVERSE POLARISATION PHENOMENA IN HARD PROCESSES (TRANSVERSITY 2014) | 2015年 / 85卷

关键词：

HARD-SCATTERING; FRAGMENTATION;

D O I：

10.1051/epjconf/20158502029

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Inclusive transverse single spin asymmetries from high energetic polarized proton proton collisions provide insight into the spin-momentum correlations in QCD. Originally expected to be small in collinear perturbative QCD, results from PHENIX and other experiments show significant asymmetries in the forward momentum direction of the polarized proton over a wide range of center-of-mass energies. Several mechanisms have been proposed that attempt to explain these asymmetries, which include initial and final state effects. In order to disentangle these effects, a variety of probes is needed in different kinematic regions. In the PHENIX experiment at the Relativistic Heavy Ion Collider (RHIC), we study polarized p+p collisions at center-of-mass energies up to 500 GeV. We will show transverse asymmetries at forward ($3.1< vertical bar\eta vertical bar <3.8$) and central rapidities ($vertical bar\eta vertical bar <0.35) and discuss their possible implications for intitial and final state effects.

引用

页数：4

共 17 条

[1] Forward Neutral-Pion Transverse Single-Spin Asymmetries in p plus p Collisions at s=200 GeV [J].

Abelev, B. I. ;

Aggarwal, M. M. ;

Ahammed, Z. ;

Anderson, B. D. ;

Arkhipkin, D. ;

Averichev, G. S. ;

Bai, Y. ;

Balewski, J. ;

Barannikova, O. ;

Barnby, L. S. ;

Baudot, J. ;

Baumgart, S. ;

Beavis, D. R. ;

Bellwied, R. ;

Benedosso, F. ;

Betts, R. R. ;

Bhardwaj, S. ;

Bhasin, A. ;

Bhati, A. K. ;

Bichsel, H. ;

Bielcik, J. ;

Bielcikova, J. ;

Bland, L. C. ;

Blyth, S-L. ;

Bombara, M. ;

Bonner, B. E. ;

Botje, M. ;

Bouchet, J. ;

Braidot, E. ;

Brandin, A. V. ;

Bueltmann, S. ;

Burton, T. P. ;

Bystersky, M. ;

Cai, X. Z. ;

Caines, H. ;

Sanchez, M. Calderon de la Barca ;

Callner, J. ;

Catu, O. ;

Cebra, D. ;

Cervantes, M. C. ;

Chajecki, Z. ;

Chaloupka, P. ;

Chattopadhyay, S. ;

Chen, H. F. ;

Chen, J. H. ;

Chen, J. Y. ;

Cheng, J. ;

Cherney, M. ;

Chikanian, A. ;

Choi, K. E. .

PHYSICAL REVIEW LETTERS, 2008, 101 (22)

[2] Transverse single-spin asymmetry and cross section for π0 and η mesons at large Feynman x in p↑ + p collisions at √s=200 GeV [J].

Adamczyk, L. ;

Agakishiev, G. ;

Aggarwal, M. M. ;

Ahammed, Z. ;

Alakhverdyants, A. V. ;

Alekseev, I. ;

Alford, J. ;

Anderson, B. D. ;

Anson, C. D. ;

Arkhipkin, D. ;

Aschenauer, E. ;

Averichev, G. S. ;

Balewski, J. ;

Bannerjee, A. ;

Barnovska, Z. ;

Beavis, D. R. ;

Bellwied, R. ;

Betancourt, M. J. ;

Betts, R. R. ;

Bhasin, A. ;

Bhati, A. K. ;

Bichsel, H. ;

Bielcik, J. ;

Bielcikova, J. ;

Bordyuzhin, I. G. ;

Borowski, W. ;

Bouchet, J. ;

Brandin, A. V. ;

Brovko, S. G. ;

Bruna, E. ;

Bueltmann, S. ;

Bunzarov, I. ;

Burton, T. P. ;

Butterworth, J. ;

Cai, X. Z. ;

Caines, H. ;

Sanchez, M. Calderon de la Barca ;

Cebra, D. ;

Cendejas, R. ;

Cervantes, M. C. ;

Chaloupka, P. ;

Chattopadhyay, S. ;

Chen, H. F. ;

Chen, J. H. ;

Chen, J. Y. ;

Chen, L. ;

Cheng, J. ;

Cherney, M. ;

Chikanian, A. ;

Christie, W. .

PHYSICAL REVIEW D, 2012, 86 (05)

[3]

Adams D., 1991, Phys. Lett, VB264, P464

[4] Measurement of transverse-single-spin asymmetries for midrapidity and forward-rapidity production of hadrons in polarized p plus p collisions at √s=200 and 62.4 GeV [J].

Adare, A. ;

Afanasiev, S. ;

Aidala, C. ;

Ajitanand, N. N. ;

Akiba, Y. ;

Al-Bataineh, H. ;

Alexander, J. ;

Angerami, A. ;

Aoki, K. ;

Apadula, N. ;

Aphecetche, L. ;

Aramaki, Y. ;

Asai, J. ;

Atomssa, E. T. ;

Averbeck, R. ;

Awes, T. C. ;

Azmoun, B. ;

Babintsev, V. ;

Bai, M. ;

Baksay, G. ;

Baksay, L. ;

Baldisseri, A. ;

Barish, K. N. ;

Barnes, P. D. ;

Bassalleck, B. ;

Basye, A. T. ;

Bathe, S. ;

Batsouli, S. ;

Baublis, V. ;

Baumann, C. ;

Bazilevsky, A. ;

Belikov, S. ;

Belmont, R. ;

Bennett, R. ;

Berdnikov, A. ;

Berdnikov, Y. ;

Bhom, J. H. ;

Bickley, A. A. ;

Blau, D. S. ;

Boissevain, J. G. ;

Bok, J. S. ;

Borel, H. ;

Boyle, K. ;

Brooks, M. L. ;

Buesching, H. ;

Bumazhnov, V. ;

Bunce, G. ;

Butsyk, S. ;

Camacho, C. M. ;

Campbell, S. .

PHYSICAL REVIEW D, 2014, 90 (01)

[5] PHENIX detector overview [J].

Adcox, K ;

Adler, SS ;

Aizama, M ;

Ajitanand, NN ;

Akiba, Y ;

Akikawa, H ;

Alexander, J ;

Al-Jamel, A ;

Allen, M ;

Alley, G ;

Amirikas, R ;

Aphecetche, L ;

Arai, Y ;

Archuleta, JB ;

Archuleta, JR ;

Armendariz, R ;

Armijo, V ;

Aronson, SH ;

Autrey, D ;

Averbeck, R ;

Awes, TC ;

Azmoun, B ;

Baldisseri, A ;

Banning, J ;

Barish, KN ;

Barker, AB ;

Barnes, PD ;

Barrette, J ;

Barta, F ;

Bassalleck, B ;

Bathe, S ;

Batsouli, S ;

Baublis, VV ;

Bazilevsky, A ;

Begay, R ;

Behrendt, J ;

Belikov, S ;

Belkin, R ;

Bellaiche, FG ;

Belyaev, ST ;

Bennett, MJ ;

Berdnikov, Y ;

Bhaganatula, S ;

Biggs, JC ;

Bland, AW ;

Blume, C ;

Bobrek, M ;

Boissevain, JG ;

Boose, S ;

Borel, H .

NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT, 2003, 499 (2-3) :469-479

[6] Measurement of transverse single-spin asymmetries for midrapidity production of neutral pions and charged hadrons in polarized p+p collisions at √s=200 GeV -: art. no. 202001 [J].

Adler, SS ;

Afanasiev, S ;

Aidala, C ;

Ajitanand, NN ;

Akiba, Y ;

Alexander, J ;

Amirikas, R ;

Aphecetche, L ;

Aronson, SH ;

Averbeck, R ;

Awes, TC ;

Azmoun, R ;

Babintsev, V ;

Baldisseri, A ;

Barish, KN ;

Barnes, PD ;

Bassalleck, B ;

Bathe, S ;

Batsouli, S ;

Baublis, V ;

Bauer, F ;

Bazilevsky, A ;

Belikov, S ;

Berdnikov, Y ;

Bhagavatula, S ;

Boissevain, JG ;

Borel, H ;

Borenstein, S ;

Brooks, ML ;

Brown, DS ;

Bruner, N ;

Bucher, D ;

Buesching, H ;

Bumazhnov, V ;

Bunce, G ;

Burward-Hoy, JM ;

Butsyk, S ;

Camard, X ;

Chai, JS ;

Chand, P ;

Chang, WC ;

Chernichenko, S ;

Chi, CY ;

Chiba, J ;

Chiu, M ;

Choi, IJ ;

Choi, J ;

Choudhury, RK ;

Chujo, T ;

Cianciolo, V .

PHYSICAL REVIEW LETTERS, 2005, 95 (20)

[7] Constraints on the gluon Sivers distribution via transverse single spin asymmetries at midrapidity in p↑p→π0X processes at BNL RHIC [J].

Anselmino, M. ;

D'Alesio, U. ;

Melis, S. ;

Murgia, F. .

PHYSICAL REVIEW D, 2006, 74 (09)

[8] Single-transverse-spin asymmetries of identified charged hadrons in polarized pp collisions at √s=62.4 GeV [J].

Arsene, I. ;

Bearden, I. G. ;

Beavis, D. ;

Bekele, S. ;

Besliu, C. ;

Budick, B. ;

Boggild, H. ;

Chasman, C. ;

Dalsgaard, H. H. ;

Debbe, R. ;

Fox, B. ;

Gaardhoje, J. J. ;

Hagel, K. ;

Jipa, A. ;

Johnson, E. B. ;

Karabowicz, R. ;

Katrynska, N. ;

Kim, E. J. ;

Larsen, T. M. ;

Lee, J. H. ;

Lovhoiden, G. ;

Majka, Z. ;

Murray, M. ;

Nygaard, C. ;

Natowitz, J. ;

Nielsen, B. S. ;

Pal, D. ;

Qviler, A. ;

Ristea, C. ;

Rohrich, D. ;

Sanders, S. J. ;

Staszel, P. ;

Tveter, T. S. ;

Videbaek, F. ;

Yang, H. ;

Wada, R. .

PHYSICAL REVIEW LETTERS, 2008, 101 (04)

[9] FRAGMENTATION OF TRANSVERSELY POLARIZED QUARKS PROBED IN TRANSVERSE-MOMENTUM DISTRIBUTIONS [J].

COLLINS, J .

NUCLEAR PHYSICS B, 1993, 396 (01) :161-182

[10] Unified picture for single transverse-spin asymmetries in hard-scattering processes [J].

Ji, Xiangdong ;

Qiu, Jian-Wei ;

Vogelsang, Werner ;

Yuan, Feng .

PHYSICAL REVIEW LETTERS, 2006, 97 (08)

← 1 2 →