/ hep-ex arXiv:1708.07080


Azimuthal transverse single-spin asymmetries of inclusive jets and charged pions within jets from polarized-proton collisions at $\sqrt{s} = 500$ GeV


Adamczyk, Leszek (AGH-UST, Cracow) ; Adams, Joseph (Ohio State U., Columbus, Dept. Phys.) ; Adkins, Kevin (U. Kentucky, Lexington, Dept. Phys. Astron.) ; Agakishiev, Geydar (JINR, Dubna) ; Aggarwal, Madan (Panjab U., Chandigarh, Dept. Phys.) ; Ahammed, Zubayer (VECC, Calcutta) ; Ajitanand, Nuggehalli (Stony Brook U., Dept. Phys. Astron.) ; Alekseev, Igor (NRNU MEPhI, Moscow) ; Anderson, Derek (TAMU, College Station Dept. Phys. Astron.) ; Aoyama, Ryo (U. Tsukuba, Inst. Phys.) ; Aparin, Alexey (JINR, Dubna) ; Arkhipkin, Dmitry (Brookhaven Natl. Lab., Dept. Phys.) ; Aschenauer, Elke-Caroline (Brookhaven Natl. Lab., Dept. Phys.) ; Ashraf, Muhammad Usman (Tsinghua U., Beijing) ; Attri, Anjali (Panjab U., Chandigarh, Dept. Phys.) ; Averichev, Georgy (JINR, Dubna) ; Bai, Xiaozhi (CCNU, Wuhan) ; Bairathi, Vipul (Bhubaneswar, NISER) ; Barish, Kenneth (UC, Riverside, Dept. Phys. Astron.) ; Behera, Arabinda (Stony Brook U., Dept. Phys. Astron.) ; Bellwied, Rene (U. Houston, Phys. Dept.) ; Bhasin, Anju (U. Jammu, Dept. Phys.) ; Bhati, Ashok (Panjab U., Chandigarh, Dept. Phys.) ; Bhattarai, Prabhat (U. Texas, Austin, Dept. Phys.) ; Bielcik, Jaroslav (CTU, Prague, FNSPE) ; Bielcikova, Jana (ASCR, Nucl. Phys. Inst., Rez.) ; Bland, Leslie (Brookhaven Natl. Lab., Dept. Phys.) ; Bordyuzhin, Igor (ITEP, Moscow) ; Bouchet, Jonathan (Kent State U., Dept. Phys.) ; Brandenburg, James (Rice U., Dept. Phys. Astron.) ; Brandin, Andrei (NRNU MEPhI, Moscow) ; Brown, Daniel (Lehigh U., Dept. Phys.) ; Bryslawskyj, Jason (UC, Riverside, Dept. Phys. Astron.) ; Bunzarov, Ivan (JINR, Dubna) ; Butterworth, Joseph (Rice U., Dept. Phys. Astron.) ; Caines, Helen (Yale U., Dept. Phys.) ; Calderon de la Barca Sanchez, Manuel (UC, Davis, Dept. Phys.) ; Campbell, John (Ohio State U., Columbus, Dept. Phys.) ; Cebra, Daniel (UC, Davis, Dept. Phys.) ; Chakaberia, Irakli (Brookhaven Natl. Lab., Dept. Phys.) ; Chaloupka, Petr (CTU, Prague, FNSPE) ; Chang, Zilong (TAMU, College Station Dept. Phys. Astron.) ; Chankova-Bunzarova, Nedialka (JINR, Dubna) ; Chatterjee, Arghya (VECC, Calcutta) ; Chattopadhyay, Subhasis (VECC, Calcutta) ; Chen, Xurong (IMP, Lanzhou, Inst. Mod. Phys.) ; Chen, Xiaolong (USTC, Hefei, DMP) ; Chen, Jinhui (Shanghai Inst. Nucl. Res.) ; Cheng, Jianping (Tsinghua U., Beijing) ; Cherney, Mike (Creighton U. Dept. Phys.) ; Christie, Bill (Brookhaven Natl. Lab., Dept. Phys.) ; Contin, Giacomo (LBNL, Berkeley, Div. Phys.) ; Crawford, Hank (UC, Berkeley, SSL) ; Das, Sabita (CCNU, Wuhan) ; Dedovich, Tatiana (JINR, Dubna) ; Deng, Jian (Shandong U., Jinan) ; Deppner, Ingo (U. Heidelberg, Phys. Inst.) ; Derevschikov, Anatoly (IHEP, Serpukhov) ; Didenko, Lidia (Brookhaven Natl. Lab., Dept. Phys.) ; Dilks, Christopher (Penn State U., University Park, Dept. Phys.) ; Dong, Xin (LBNL, Berkeley, Div. Phys.) ; Drachenberg, James (Lamar U.) ; Draper, James (UC, Davis, Dept. Phys.) ; Dunlop, James (Brookhaven Natl. Lab., Dept. Phys.) ; Efimov, Leonid (JINR, Dubna) ; Elsey, Nicholas (Wayne State U., Detroit, Dept. Phys. Astron.) ; Engelage, Jack (UC, Berkeley, SSL) ; Eppley, Geary (Rice U., Dept. Phys. Astron.) ; Esha, Roli (UCLA, Dept. Phys. Astron.) ; Esumi, ShinIchi (U. Tsukuba, Inst. Phys.) ; Evdokimov, Olga (U. Illinois, Chicago, Dept. Phys.) ; Ewigleben, Justin (Lehigh U., Dept. Phys.) ; Eyser, Oleg (Brookhaven Natl. Lab., Dept. Phys.) ; Fatemi, Renee (U. Kentucky, Lexington, Dept. Phys. Astron.) ; Fazio, Salvatore (Brookhaven Natl. Lab., Dept. Phys.) ; Federic, Pavol (ASCR, Nucl. Phys. Inst., Rez.) ; Federicova, Pavla (CTU, Prague, FNSPE) ; Fedorisin, Jan (JINR, Dubna) ; Feng, Zhao (CCNU, Wuhan) ; Filip, Peter (JINR, Dubna) ; Finch, Evan (Southern Connecticut State U., New Haven) ; Fisyak, Yuri (Brookhaven Natl. Lab., Dept. Phys.) ; Flores, Chris (UC, Davis, Dept. Phys.) ; Fujita, Jiro (Creighton U. Dept. Phys.) ; Fulek, Lukasz (AGH-UST, Cracow) ; Gagliardi, Carl (TAMU, College Station Dept. Phys. Astron.) ; Geurts, Frank (Rice U., Dept. Phys. Astron.) ; Gibson, Adam (Valparaiso U., USA, Dept. Phys.) ; Girard, Martin (Warsaw U. of Tech., Fac. Phys.) ; Grosnick, David (Valparaiso U., USA, Dept. Phys.) ; Gunarathne, Devika (Temple U., Dept. Phys.) ; Guo, Yi (Kent State U., Dept. Phys.) ; Gupta, Anik (U. Jammu, Dept. Phys.) ; Guryn, Wlodek (Brookhaven Natl. Lab., Dept. Phys.) ; Hamad, Ayman (Kent State U., Dept. Phys.) ; Hamed, Ahmed (TAMU, College Station Dept. Phys. Astron.) ; Harlenderova, Alena (CTU, Prague, FNSPE) ; Harris, John (Yale U., Dept. Phys.) ; He, Liang (Purdue U., West Lafayette, Dept. Phys.) ; Heppelmann, Steven (Penn State U., University Park, Dept. Phys.) ; Heppelmann, Samuel (UC, Davis, Dept. Phys.) ; Herrmann, Norbert (U. Heidelberg, Phys. Inst.) ; Hirsch, Andy (Purdue U., West Lafayette, Dept. Phys.) ; Horvat, Stephen (Yale U., Dept. Phys.) ; Huang, Bingchu (U. Illinois, Chicago, Dept. Phys.) ; Huang, Te-Chuan (NCKU, Tainan, Dept. Phys.) ; Huang, Xinjie (Tsinghua U., Beijing) ; Huang, Huan (UCLA, Dept. Phys. Astron.) ; Humanic, Tom (Ohio State U., Columbus, Dept. Phys.) ; Huo, Peng (Stony Brook U., Dept. Phys. Astron.) ; Igo, George (UCLA, Dept. Phys. Astron.) ; Jacobs, William (Indiana U., Bloomington, Dept. Phys.) ; Jentsch, Alexander (U. Texas, Austin, Dept. Phys.) ; Jia, Jiangyong (Stony Brook U., Dept. Phys. Astron.) ; Jiang, Kun (USTC, Hefei, DMP) ; Jowzaee, Sedigheh (Wayne State U., Detroit, Dept. Phys. Astron.) ; Judd, Eleanor (UC, Berkeley, SSL) ; Kabana, Sonya (Kent State U., Dept. Phys.) ; Kalinkin, Dmitry (Indiana U., Bloomington, Dept. Phys.) ; Kang, Kejun (Tsinghua U., Beijing) ; Kapukchyan, David (UC, Riverside, Dept. Phys. Astron.) ; Kauder, Kolja (Wayne State U., Detroit, Dept. Phys. Astron.) ; Ke, Hongwei (Brookhaven Natl. Lab., Dept. Phys.) ; Keane, Declan (Kent State U., Dept. Phys.) ; Kechechyan, Armen (JINR, Dubna) ; Khan, Zillay (U. Illinois, Chicago, Dept. Phys.) ; Kikola, Daniel (Warsaw U. of Tech., Fac. Phys.) ; Kim, Chong (UC, Riverside, Dept. Phys. Astron.) ; Kisel, Ivan (Goethe U., Frankfurt, FIAS) ; Kisiel, Adam (Warsaw U. of Tech., Fac. Phys.) ; Kochenda, Leonid (NRNU MEPhI, Moscow) ; Kocmanek, Martin (ASCR, Nucl. Phys. Inst., Rez.) ; Kollegger, Thorsten (Goethe U., Frankfurt, FIAS) ; Kosarzewski, Leszek (Warsaw U. of Tech., Fac. Phys.) ; Kraishan, Amani (Temple U., Dept. Phys.) ; Krauth, Luke (UC, Riverside, Dept. Phys. Astron.) ; Kravtsov, Peter (NRNU MEPhI, Moscow) ; Krueger, Keith (Argonne Natl. Lab., HEP Div.) ; Kulathunga, Nalinda (U. Houston, Phys. Dept.) ; Kumar, Lokesh (Panjab U., Chandigarh, Dept. Phys.) ; Kvapil, Jakub (CTU, Prague, FNSPE) ; Kwasizur, Joseph (Indiana U., Bloomington, Dept. Phys.) ; Lacey, Roy (Stony Brook U., Dept. Phys. Astron.) ; Landgraf, Jeffery (Brookhaven Natl. Lab., Dept. Phys.) ; Landry, Keith (UCLA, Dept. Phys. Astron.) ; Lauret, Jerome (Brookhaven Natl. Lab., Dept. Phys.) ; Lebedev, Alexei (Brookhaven Natl. Lab., Dept. Phys.) ; Lednicky, Richard (JINR, Dubna) ; Lee, Jeong-Hun (Brookhaven Natl. Lab., Dept. Phys.) ; Li, Xin (USTC, Hefei, DMP) ; Li, Wei (Shanghai Inst. Nucl. Res.) ; Li, Yuanjing (Tsinghua U., Beijing) ; Li, Cheng (USTC, Hefei, DMP) ; Lidrych, Jindrich (CTU, Prague, FNSPE) ; Lin, Ting (Indiana U., Bloomington, Dept. Phys.) ; Lisa, Mike (Ohio State U., Columbus, Dept. Phys.) ; Liu, Feng (CCNU, Wuhan) ; Liu, Peifeng (Stony Brook U., Dept. Phys. Astron.) ; Liu, Yanfang (TAMU, College Station Dept. Phys. Astron.) ; Liu, Huanzhao (Indiana U., Bloomington, Dept. Phys.) ; Ljubicic, Tonko (Brookhaven Natl. Lab., Dept. Phys.) ; Llope, WJ (Wayne State U., Detroit, Dept. Phys. Astron.) ; Lomnitz, Michael (LBNL, Berkeley, Div. Phys.) ; Longacre, Ron (Brookhaven Natl. Lab., Dept. Phys.) ; Luo, Xiaofeng (CCNU, Wuhan) ; Luo, Siwei (U. Illinois, Chicago, Dept. Phys.) ; Ma, Guo-Liang (Shanghai Inst. Nucl. Res.) ; Ma, Long (Shanghai Inst. Nucl. Res.) ; Ma, Rongrong (Brookhaven Natl. Lab., Dept. Phys.) ; Ma, Yu-Gang (Shanghai Inst. Nucl. Res.) ; Magdy Abdelwahab Abdelrahman, Niseem (Stony Brook U., Dept. Phys. Astron.) ; Majka, Richard (Yale U., Dept. Phys.) ; Mallick, Debasish (Bhubaneswar, NISER) ; Margetis, Spiros (Kent State U., Dept. Phys.) ; Markert, Christina (U. Texas, Austin, Dept. Phys.) ; Matis, Howard (LBNL, Berkeley, Div. Phys.) ; Mayes, David (UC, Riverside, Dept. Phys. Astron.) ; Meehan, Kathryn (UC, Davis, Dept. Phys.) ; Mei, Jincheng (Shandong U., Jinan) ; Miller, Zachariah (U. Illinois, Chicago, Dept. Phys.) ; Minaev, Nikolai (IHEP, Serpukhov) ; Mioduszewski, Saskia (TAMU, College Station Dept. Phys. Astron.) ; Mishra, Debadeepti (Bhubaneswar, NISER) ; Mizuno, Sanshiro (LBNL, Berkeley, Div. Phys.) ; Mohanty, Bedanga (Bhubaneswar, NISER) ; Mondal, Mriganka (Inst. Phys., Bhubaneswar) ; Morozov, Dmitry (IHEP, Serpukhov) ; Mustafa, Mustafa (LBNL, Berkeley, Div. Phys.) ; Nasim, Md (UCLA, Dept. Phys. Astron.) ; Nayak, Tapan (VECC, Calcutta) ; Nelson, John (UC, Berkeley, SSL) ; Nemes, Daniel (Yale U., Dept. Phys.) ; Nie, Maowu (Shanghai Inst. Nucl. Res.) ; Nigmatkulov, Grigory (NRNU MEPhI, Moscow) ; Niida, Takafumi (Wayne State U., Detroit, Dept. Phys. Astron.) ; Nogach, Larisa (IHEP, Serpukhov) ; Nonaka, Toshihiro (U. Tsukuba, Inst. Phys.) ; Nurushev, Sandibek (IHEP, Serpukhov) ; Odyniec, Grazyna (LBNL, Berkeley, Div. Phys.) ; Ogawa, Akio (Brookhaven Natl. Lab., Dept. Phys.) ; Oh, Kunsu (PNU, Pusan, Dept. Phys.) ; Okorokov, Vitalii (NRNU MEPhI, Moscow) ; Olvitt Jr, Daniel (Temple U., Dept. Phys.) ; Page, Brian (Brookhaven Natl. Lab., Dept. Phys.) ; Pak, Robert (Brookhaven Natl. Lab., Dept. Phys.) ; Pandit, Yadav (U. Illinois, Chicago, Dept. Phys.) ; Panebratsev, Yuri (JINR, Dubna) ; Pawlik, Bogdan (IFJ, Krakow) ; Pei, Hua (CCNU, Wuhan) ; Perkins, Chris (UC, Berkeley, SSL) ; Pluta, Jan (Warsaw U. of Tech., Fac. Phys.) ; Poniatowska, Katarzyna (Warsaw U. of Tech., Fac. Phys.) ; Porter, Jeff (LBNL, Berkeley, Div. Phys.) ; Posik, Matthew (Temple U., Dept. Phys.) ; Pruthi, Navneet Kumar (Panjab U., Chandigarh, Dept. Phys.) ; Przybycien, Mariusz (AGH-UST, Cracow) ; Putschke, Joern (Wayne State U., Detroit, Dept. Phys. Astron.) ; Quintero, Amilkar (Temple U., Dept. Phys.) ; Ramachandran, Suvarna (U. Kentucky, Lexington, Dept. Phys. Astron.) ; Ray, Lanny (U. Texas, Austin, Dept. Phys.) ; Reed, Rosi (Lehigh U., Dept. Phys.) ; Rehbein, Matthew (Creighton U. Dept. Phys.) ; Ritter, Hans Georg (LBNL, Berkeley, Div. Phys.) ; Roberts, Jay (Rice U., Dept. Phys. Astron.) ; Rogachevskiy, Oleg (JINR, Dubna) ; Romero, Juan (UC, Davis, Dept. Phys.) ; Roth, Jordan (Creighton U. Dept. Phys.) ; Ruan, Lijuan (Brookhaven Natl. Lab., Dept. Phys.) ; Rusnak, Jan (ASCR, Nucl. Phys. Inst., Rez.) ; Rusnakova, Olga (CTU, Prague, FNSPE) ; Sahoo, Nihar (TAMU, College Station Dept. Phys. Astron.) ; Sahu, Pradip Kumar (Inst. Phys., Bhubaneswar) ; Salur, Sevil (Rutgers U., Piscataway, Dept. Phys. Astron.) ; Sandweiss, Jack (Yale U., Dept. Phys.) ; Saur, Miroslav (ASCR, Nucl. Phys. Inst., Rez.) ; Schambach, Joachim (U. Texas, Austin, Dept. Phys.) ; Schmah, Alexander (LBNL, Berkeley, Div. Phys.) ; Schmidke, Bill (Brookhaven Natl. Lab., Dept. Phys.) ; Schmitz, Norbert (MPI Phys., Munich) ; Schweid, Benjamin (Stony Brook U., Dept. Phys. Astron.) ; Seger, Janet (Creighton U. Dept. Phys.) ; Sergeeva, Maria (UCLA, Dept. Phys. Astron.) ; Seto, Richard (UC, Riverside, Dept. Phys. Astron.) ; Seyboth, Peter (MPI Phys., Munich) ; Shah, Neha (Shanghai Inst. Nucl. Res.) ; Shahaliev, Ehtiram (JINR, Dubna) ; Shanmuganathan, Prashanth (Lehigh U., Dept. Phys.) ; Shao, Ming (USTC, Hefei, DMP) ; Shen, Wen-Qing (Shanghai Inst. Nucl. Res.) ; Shi, Shusu (CCNU, Wuhan) ; Shi, Zhaozhong (LBNL, Berkeley, Div. Phys.) ; Shou, Qi-Ye (Shanghai Inst. Nucl. Res.) ; Sichtermann, Ernst (LBNL, Berkeley, Div. 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Phys.) ; Witt, Richard (U.S. Naval Acad., Annapolis) ; Wu, Yang (Kent State U., Dept. Phys.) ; Xiao, Zhigang (Tsinghua U., Beijing) ; Xie, Guannan (USTC, Hefei, DMP) ; Xie, Wei (Purdue U., West Lafayette, Dept. Phys.) ; Xu, Yi-Fei (Shanghai Inst. Nucl. Res.) ; Xu, Ji (CCNU, Wuhan) ; Xu, Qinghua (Shandong U., Jinan) ; Xu, Nu (LBNL, Berkeley, Div. Phys.) ; Xu, Zhangbu (Brookhaven Natl. Lab., Dept. Phys.) ; Yang, Shuai (Brookhaven Natl. Lab., Dept. Phys.) ; Yang, Yi (NCKU, Tainan, Dept. Phys.) ; Yang, Chi (Shandong U., Jinan) ; Yang, Qian (Shandong U., Jinan) ; Ye, Zaochen (U. Illinois, Chicago, Dept. Phys.) ; Ye, Zhenyu (U. Illinois, Chicago, Dept. Phys.) ; Yi, Li (Yale U., Dept. Phys.) ; Yip, Kin (Brookhaven Natl. Lab., Dept. Phys.) ; Yoo, In-Kwon (PNU, Pusan, Dept. Phys.) ; Yu, Ning (CCNU, Wuhan) ; Zbroszczyk, Hanna (Warsaw U. of Tech., Fac. Phys.) ; Zha, Wangmei (USTC, Hefei, DMP) ; Zhang, Zhengqiao (Shanghai Inst. Nucl. Res.) ; Zhang, Jinlong (IMP, Lanzhou, Inst. Mod. Phys.) ; Zhang, Shenghui (USTC, Hefei, DMP) ; Zhang, Song (Shanghai Inst. Nucl. Res.) ; Zhang, Jinlong (LBNL, Berkeley, Div. Phys.) ; Zhang, Yifei (USTC, Hefei, DMP) ; Zhang, Xiaoping (Tsinghua U., Beijing) ; Zhang, Jingbo (CCNU, Wuhan) ; Zhao, Jie (Purdue U., West Lafayette, Dept. Phys.) ; Zhong, Chen (Shanghai Inst. Nucl. Res.) ; Zhou, Long (USTC, Hefei, DMP) ; Zhou, Chensheng (Shanghai Inst. Nucl. Res.) ; Zhu, Xianglei (Tsinghua U., Beijing) ; Zhu, Zhanwen (Shandong U., Jinan) ; Zyzak, Maksym (Goethe U., Frankfurt, FIAS)

Pages: 19

Abstract: We report the first measurements of transverse single-spin asymmetries for inclusive jet and jet + $\pi^{\pm}$ production at midrapidity from transversely polarized proton-proton collisions at $\sqrt{s} = 500$ GeV. The data were collected in 2011 with the STAR detector sampled from 23 pb$^{-1}$ integrated luminosity with an average beam polarization of 53%. Asymmetries are reported for jets with transverse momenta $6 < p_{T, jet} < 55$ GeV/c and pseudorapidity $|\eta| < 1$. Presented are measurements of the inclusive-jet azimuthal transverse single-spin asymmetry, sensitive to twist-3 initial-state quark-gluon correlators; the Collins asymmetry, sensitive to quark transversity coupled to the polarized Collins fragmentation function; and the first measurement of the "Collins-like" asymmetry, sensitive to linearly polarized gluons. Within the present statistical precision, inclusive-jet and Collins-like asymmetries are small, with the latter allowing the first experimental constraints on gluon linear polarization in a polarized proton. At higher values of jet transverse momenta, we observe the first non-zero Collins asymmetries in polarized-proton collisions, with a statistical significance of greater than $5\sigma$. The results span a range of x similar to results from SIDIS but at much higher $Q^{2}$. The Collins results enable tests of universality and factorization-breaking in the transverse momentum-dependent formulation of perturbative quantum chromodynamics.

Web-Page: http://inspirehep.net/record/1618345/files/fig8.png; http://inspirehep.net/record/1618345/files/fig2.png; http://inspirehep.net/record/1618345/files/fig3.png; http://inspirehep.net/record/1618345/files/fig10a.png; http://inspirehep.net/record/1618345/files/fig4.png; http://inspirehep.net/record/1618345/files/fig6.png; http://inspirehep.net/record/1618345/files/fig12.png; http://inspirehep.net/record/1618345/files/fig11b.png; http://inspirehep.net/record/1618345/files/fig9b.png; http://inspirehep.net/record/1618345/files/fig7.png; http://inspirehep.net/record/1618345/files/fig13.png; http://inspirehep.net/record/1618345/files/fig1.png; http://inspirehep.net/record/1618345/files/fig11a.png; http://inspirehep.net/record/1618345/files/fig5.png; http://inspirehep.net/record/1618345/files/fig9a.png; http://inspirehep.net/record/1618345/files/fig10b.png; http://inspirehep.net/record/1618345/files/arXiv:1708.07080.pdf


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