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1. Hemoglobin induced cell trauma indirectly influences endothelial TLR9 activity resulting in pulmonary vascular smooth muscle cell activation.

Author

Zoe Loomis, Paul Eigenberger, Katherine Redinius, Christina Lisk, Vijaya Karoor, Eva Nozik-Grayck, Scott K Ferguson, Kathryn Hassell, Rachelle Nuss, Kurt Stenmark, Paul Buehler, and David C Irwin

Subjects
Medicine, Science
Abstract

It is now well established that both inherited and acquired forms of hemolytic disease can promote pulmonary vascular disease consequent of free hemoglobin (Hb) induced NO scavenging, elevations in reactive oxygen species and lipid peroxidation. It has recently been reported that oxidative stress can activate NFkB through a toll-like receptor 9 (TLR9) mediated pathway; further, TLR9 can be activated by either nuclear or mitochondrial DNA liberated by stress induced cellular trauma. We hypothesis that Hb induced lipid peroxidation and subsequent endothelial cell trauma is linked to TLR9 activation, resulting in IL-6 mediated pulmonary smooth muscle cell proliferation. We examined the effects of Hb on rat pulmonary artery endothelial and smooth muscle cells (rPAEC and rPASMC, respectively), and then utilized TLR9 and IL6 inhibitors, as well as the Hb and heme binding proteins (haptoglobin (Hp) and hemopexin (Hpx), respectively) to further elucidate the aforementioned mediators. Further, we explored the effects of Hb in vivo utilizing endothelial cell (EC) specific myeloid differentiation primary response gene-88 (MyD88) and TLR9 null mice. Our data show that oxidized Hb induces lipid peroxidation, cellular toxicity (5.5 ± 1.7 fold; p≤0.04), increased TLR9 activation (60%; p = 0.01), and up regulated IL6 expression (1.75±0.3 fold; p = 0.04) in rPAEC. Rat PASMC exhibited a more proliferative state (13 ± 1%; p = 0.01) when co-cultured with Hb activated rPAEC. These effects were attenuated with the sequestration of Hb or heme by Hp and Hpx as well as with TLR9 an IL-6 inhibition. Moreover, in both EC-MyD88 and TLR9 null mice Hb-infusion resulted in less lung IL-6 expression compared to WT cohorts. These results demonstrate that Hb-induced lipid peroxidation can initiate a modest TLR9 mediated inflammatory response, subsequently generating an activated SMC phenotype.

Published
2017
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2. The Use of Priming Solutions to Scavenge Free Hb and Free Hb Catabolism Byproducts Reduces Hemolysis-Induced Hypertension in Venovenous Extracorporeal Circulation

Author

Krianthan Govender, Paul Buehler, Andre Palmer, Robert Owens, and Pedro Cabrales

Subjects
Physiology
Abstract

Extracorporeal circulation procedures often utilize a pump as part of the circuit to drive blood flow, which subjects red blood cells (RBCs) to excessively high shear stresses, resulting in hemolysis and free hemoglobin (Hb). Plasma Hb (pHb) is not stable within the circulation, and can degrade into toxic byproducts, resulting in NO scavenging, vasoconstriction, inflammation, and increased production of reactive oxygen species (ROS). The goal of this study is to determine whether a protein complex containing apohemoglobin and haptoglobin (ApoHb-Hp) can alleviate the sequelae associated with hemolysis induced with a model of venous-venous extracorporeal circulation. Male Golden Syrian hamsters instrumented with window chambers underwent surgery with isoflurane anesthetic to insert two venous cannulas; the drainage cannula was positioned in the inferior vena cava, while the reinfusion cannula was inserted into the left jugular vein. To monitor mean blood pressure (MAP), heart rate (HR), hematocrit (Hct), and pHb, an arterial line was placed into the left carotid artery. After surgery, the animal was heparinized (2.5 IU/g), and the cannulas connected to an extracorporeal circuit consisting of a roller pump and a bubble trap. The circuit was randomly primed with one of three solutions tested: 5% human serum albumin (HSA) solution, ApoHb-Hp complex solution, or a protein solution containing hemopexin (3.05 mg/mL), transferrin (29.3 mg/mL), and haptoglobin (8.25 mg/mL) (protein cocktail). The experimental procedure after surgery lasted a total of 2 hours and was broken down into seven stages. First, baseline measurements were taken after hemodilution by slow infusion of the extracorporeal circuit volume at 0.2 mL/min. Then, the flow rate was ramped up to 50% of the animal’s cardiac output (CO), and maintained at this flow rate for 35 minutes. The flow was then ramped down to 0.2 mL/min, and maintained for an additional 15 minutes to help equilibrate the blood within the animal with that contained in the circuit. Lastly, the flow was stopped for 15 minutes, placing the animal off pump support. Results show that MAP was significantly elevated in the HSA group as compared to the apoHb-Hp group during the ramp up phase, the equilibration phase, and the off pump phase at the end. The MAP for the protein cocktail group was significantly lower than the HSA group at all timepoints after flow rate was ramped up. While an increase in pHb was expected for all groups tested, the protein cocktail group was significantly lower than the HSA group at the end of the ramp up, equilibration, and off-pump phase. Interestingly, the protein cocktail group displayed a significantly lower pHb level when compared to the apoHb-Hp group at the end of the experiment. These results taken in conjunction suggest that the use of Hb and heme scavenging solutions as a priming fluid for extracorporeal circulation procedures can help reduce hemolysis-induced hypertension. This work was supported by funding from NIH/NHLBI grants R01HL162120, R01HL159862. This is the full abstract presented at the American Physiology Summit 2023 meeting and is only available in HTML format. There are no additional versions or additional content available for this abstract. Physiology was not involved in the peer review process.

Published
2023

3. Production of K*(892)0 and ϕ(1020) in pp and Pb−Pb collisions at sNN=5.02 TeV

Author

Stefano Boi, Georgy Kornakov, Miroslaw Jablonski, Fabio Catalano, Norbert Novitzky, Lokesh Kumar, Bernhard Hohlweger, John M. Jowett, Diego Stocco, Rinaldo Rui, Łukasz Kamil Graczykowski, Yvonne Pachmayer, Oton Vazquez Doce, Ivan Kisel, Victor Gonzalez, Andrea Dubla, Arvind Khuntia, Alberto Baldisseri, Lee Barnby, Anar Rustamov, Alessandro Feliciello, Dr. Biswarup Paul, Salvatore De Pasquale, Masanori Ogino, Fabrizio Grosa, Lorenzo De Cilladi, Felix Reidt, Sumit Basu, Mike Sas, Jorge López, Professor David Evans, Smbat Grigoryan, Sergey Nikolaev, Borge S Nielsen, Francesca Carnesecchi, Sebastian Koryciak, Jeremy Wilkinson, Jens-Jorgen Gaardhoje, Dong Jo Kim, Krzysztof Redlich, Kristjan Gulbrandsen, Christine Nattrass, Francesca Bellini, Tomas Herman, Antonio Uras, Domenico Di Bari, Francesca Ercolessi, Johan Alme, Tiziano Virgili, Andreas Mathis, Federico Ronchetti, David Silvermyr, Kai Schweda, Simone Ragoni, Adrian Sevcenco, Przemyslaw Karczmarczyk, Kenneth Read, Francesca Soramel, Meenakshi Sharma, Thomas Dietel, Vladimir Vechernin, Andrea Ferrero, Lukas Nellen, Roman Lavicka, Sang Un Ahn, Mattia Faggin, Wladyslaw Henryk Trzaska, Raimond Snellings, Marek Gorgon, Markus Keil, Guillaume Batigne, Paul Buehler, Vladimir Zherebchevsky, Yury Melikyan, Luciano Ramello, Sergey Fokin, Roy Lemmon, Anisa Khatun, Nicolò Jacazio, NEELIMA AGRAWAL, Sami Räsänen, Michael Winn, Daniele De Gruttola, Marie Germain, Gianluca Usai, Marco Van Leeuwen, Luca Barioglio, Javier Castillo Castellanos, Enrico Scomparin, Anju Bhasin, Anton Alkin, Jacek Kitowski, Chiara De Martin, In-Kwon Yoo, Peter Christiansen, Valentina Zaccolo, Paolo Camerini, Bartosz Balis, Otwinowski Jacek, Laurent Aphecetche, Chiara Pinto, Dr. Sushanta Tripathy, Sean Murray, Ian Bearden, Małgorzata Janik, Rahul Ramachandran Nair, Matthew Buckland, Chiara Oppedisano, Piotr Gasik, and Francesco Prino

Published
2022

4. Hypertriton Production in p -Pb Collisions at sNN=5.02 TeV

Author

Stefano Boi, Georgy Kornakov, Miroslaw Jablonski, Fabio Catalano, Norbert Novitzky, Lokesh Kumar, Bernhard Hohlweger, John M. Jowett, Diego Stocco, Rinaldo Rui, Łukasz Kamil Graczykowski, Yvonne Pachmayer, Oton Vazquez Doce, Ivan Kisel, Victor Gonzalez, Andrea Dubla, Arvind Khuntia, Alberto Baldisseri, Lee Barnby, Alexander Kurepin, Anar Rustamov, Alessandro Feliciello, Uliana Dmitrieva, Dr. Biswarup Paul, Salvatore De Pasquale, Masanori Ogino, Fabrizio Grosa, Lorenzo De Cilladi, Felix Reidt, Sumit Basu, Mike Sas, Jorge López, Professor David Evans, Smbat Grigoryan, Sergey Nikolaev, Leticia Cunqueiro, Borge S Nielsen, Francesca Carnesecchi, Gergely Gábor Barnaföldi, Sebastian Koryciak, Jeremy Wilkinson, Jens-Jorgen Gaardhoje, Dong Jo Kim, Krzysztof Redlich, Kristjan Gulbrandsen, Christine Nattrass, Francesca Bellini, Vladimir Kovalenko, Tomas Herman, Antonio Uras, Domenico Di Bari, Francesca Ercolessi, LUIGI DELLO STRITTO, Johan Alme, Tiziano Virgili, Andreas Mathis, Federico Ronchetti, David Silvermyr, Kai Schweda, Simone Ragoni, Adrian Sevcenco, Przemyslaw Karczmarczyk, Kenneth Read, Francesca Soramel, Meenakshi Sharma, Thomas Dietel, Vladimir Vechernin, Andrea Ferrero, Lukas Nellen, Roman Lavicka, Sang Un Ahn, Mattia Faggin, Wladyslaw Henryk Trzaska, Syaefudin Jaelani, Raimond Snellings, Marek Gorgon, Markus Keil, Guillaume Batigne, Paul Buehler, Yury Melikyan, Luciano Ramello, Sergey Fokin, Roy Lemmon, Nicolò Jacazio, NEELIMA AGRAWAL, Sami Räsänen, Michael Winn, Daniele De Gruttola, Marie Germain, Sandro Christian Wenzel, Gianluca Usai, Marco Van Leeuwen, Luca Barioglio, Javier Castillo Castellanos, Enrico Scomparin, Anju Bhasin, Anton Alkin, Jacek Kitowski, Chiara De Martin, In-Kwon Yoo, Jun Takahashi, Serpil Yalcin Kuzu, Peter Christiansen, Antonina Rosano, Valentina Zaccolo, Paolo Camerini, Bartosz Balis, Jian Liu, Otwinowski Jacek, Laurent Aphecetche, Chiara Pinto, Jose Luis Bazo Alba, Dr. Sushanta Tripathy, Guillaume Taillepied, Sean Murray, Ian Bearden, Małgorzata Janik, Rahul Ramachandran Nair, Matthew Buckland, Chiara Oppedisano, Piotr Gasik, and Francesco Prino

Subjects
General Physics and Astronomy
Published
2022

5. Polarization of Λ and Λ¯ Hyperons along the Beam Direction in Pb-Pb Collisions at sNN=5.02 TeV

Author

Stefano Boi, Georgy Kornakov, Miroslaw Jablonski, Fabio Catalano, Norbert Novitzky, Lokesh Kumar, Bernhard Hohlweger, John M. Jowett, Diego Stocco, Rinaldo Rui, Łukasz Kamil Graczykowski, Yvonne Pachmayer, Oton Vazquez Doce, Ivan Kisel, Victor Gonzalez, Andrea Dubla, Arvind Khuntia, Alberto Baldisseri, Lee Barnby, Anar Rustamov, Alessandro Feliciello, Uliana Dmitrieva, Dr. Biswarup Paul, Salvatore De Pasquale, Masanori Ogino, Fabrizio Grosa, Lorenzo De Cilladi, Felix Reidt, Sumit Basu, Mike Sas, Jorge López, Professor David Evans, Smbat Grigoryan, Sergey Nikolaev, Leticia Cunqueiro, Borge S Nielsen, Francesca Carnesecchi, Gergely Gábor Barnaföldi, Sebastian Koryciak, Stefania Beole', Jeremy Wilkinson, Jens-Jorgen Gaardhoje, Dong Jo Kim, Krzysztof Redlich, Kristjan Gulbrandsen, Christine Nattrass, Francesca Bellini, Vladimir Kovalenko, Tomas Herman, Antonio Uras, Domenico Di Bari, Francesca Ercolessi, LUIGI DELLO STRITTO, Johan Alme, Tiziano Virgili, Andreas Mathis, Federico Ronchetti, David Silvermyr, Kai Schweda, Simone Ragoni, Adrian Sevcenco, Przemyslaw Karczmarczyk, Kenneth Read, Francesca Soramel, Meenakshi Sharma, Vladimir Vechernin, Andrea Ferrero, Lukas Nellen, Roman Lavicka, Sang Un Ahn, Mattia Faggin, Wladyslaw Henryk Trzaska, Syaefudin Jaelani, Raimond Snellings, Marek Gorgon, Markus Keil, Guillaume Batigne, Paul Buehler, Rashmi Raniwala, Yury Melikyan, Luciano Ramello, Sergey Fokin, Roy Lemmon, Nicolò Jacazio, NEELIMA AGRAWAL, Sami Räsänen, Michael Winn, Daniele De Gruttola, Marie Germain, Sandro Christian Wenzel, Gianluca Usai, Marco Van Leeuwen, Luca Barioglio, Javier Castillo Castellanos, Enrico Scomparin, Anju Bhasin, Anton Alkin, Jacek Kitowski, Chiara De Martin, In-Kwon Yoo, Jun Takahashi, Serpil Yalcin Kuzu, Peter Christiansen, Antonina Rosano, Valentina Zaccolo, Paolo Camerini, Bartosz Balis, Alberto Martín Gago Medina, Otwinowski Jacek, Laurent Aphecetche, Chiara Pinto, Jose Luis Bazo Alba, Dr. Sushanta Tripathy, Guillaume Taillepied, Sean Murray, Fernando Antonio Flor, Ian Bearden, Małgorzata Janik, Rahul Ramachandran Nair, Matthew Buckland, Chiara Oppedisano, Piotr Gasik, and Francesco Prino

Subjects
General Physics and Astronomy
Published
2022

6. Measurement of the Groomed Jet Radius and Momentum Splitting Fraction in pp and Pb-Pb Collisions at sNN=5.02 TeV

Author

Stefano Boi, Georgy Kornakov, Miroslaw Jablonski, Fabio Catalano, Norbert Novitzky, Lokesh Kumar, Bernhard Hohlweger, John M. Jowett, Barbara Trzeciak, Diego Stocco, Rinaldo Rui, Łukasz Kamil Graczykowski, Yvonne Pachmayer, Oton Vazquez Doce, Ivan Kisel, Victor Gonzalez, Andrea Dubla, Arvind Khuntia, Alberto Baldisseri, Lee Barnby, Anar Rustamov, Alessandro Feliciello, Uliana Dmitrieva, Dr. Biswarup Paul, Salvatore De Pasquale, Jamila Butt, Masanori Ogino, Fabrizio Grosa, Lorenzo De Cilladi, Felix Reidt, Sumit Basu, Mike Sas, Jorge López, Professor David Evans, Davide Pagano, Smbat Grigoryan, Sergey Nikolaev, Leticia Cunqueiro, Borge S Nielsen, Francesca Carnesecchi, Gergely Gábor Barnaföldi, Sebastian Koryciak, Stefania Beole', Jeremy Wilkinson, Jens-Jorgen Gaardhoje, Dong Jo Kim, Krzysztof Redlich, Kristjan Gulbrandsen, Christine Nattrass, Francesca Bellini, Vladimir Kovalenko, Tomas Herman, Antonio Uras, Domenico Di Bari, Francesca Ercolessi, LUIGI DELLO STRITTO, Johan Alme, Tiziano Virgili, Andreas Mathis, ALEXANDER BOLOZDYNYA, Federico Ronchetti, David Silvermyr, Kai Schweda, Simone Ragoni, Adrian Sevcenco, Przemyslaw Karczmarczyk, Kenneth Read, Francesca Soramel, Meenakshi Sharma, Vladimir Vechernin, Andrea Ferrero, Lukas Nellen, Roman Lavicka, Sang Un Ahn, Mattia Faggin, Wladyslaw Henryk Trzaska, Syaefudin Jaelani, Raimond Snellings, Marek Gorgon, Guillaume Batigne, Paul Buehler, Rashmi Raniwala, Yury Melikyan, Luciano Ramello, Sergey Fokin, Roy Lemmon, Nicolò Jacazio, NEELIMA AGRAWAL, Sami Räsänen, Michael Winn, Daniele De Gruttola, Marie Germain, Sandro Christian Wenzel, Gianluca Usai, Marco Van Leeuwen, Luca Barioglio, Javier Castillo Castellanos, Enrico Scomparin, Anju Bhasin, Anton Alkin, Gabriele Fiorenza, Jacek Kitowski, Chiara De Martin, In-Kwon Yoo, Jun Takahashi, Serpil Yalcin Kuzu, Peter Christiansen, Antonina Rosano, Valentina Zaccolo, Paolo Camerini, Lidia Goerlich, Bartosz Balis, Alberto Martín Gago Medina, Otwinowski Jacek, Laurent Aphecetche, Chiara Pinto, Jose Luis Bazo Alba, Cesar Ceballos, Dr. Sushanta Tripathy, Guillaume Taillepied, Sean Murray, Fernando Antonio Flor, Ian Bearden, Małgorzata Janik, Rahul Ramachandran Nair, Matthew Buckland, Chiara Oppedisano, Piotr Gasik, and Francesco Prino

Subjects
General Physics and Astronomy
Published
2022

7. Measurement of Prompt D0 , Λc+ , and Σc0,++(2455) Production in Proton-Proton Collisions at s=13 TeV

Author

Stefano Boi, Georgy Kornakov, Miroslaw Jablonski, Fabio Catalano, Norbert Novitzky, Lokesh Kumar, Bernhard Hohlweger, John M. Jowett, Marek Bombara, Diego Stocco, Rinaldo Rui, Łukasz Kamil Graczykowski, Yvonne Pachmayer, Oton Vazquez Doce, Ivan Kisel, Victor Gonzalez, Andrea Dubla, Arvind Khuntia, Alberto Baldisseri, Lee Barnby, Anar Rustamov, Alessandro Feliciello, Uliana Dmitrieva, Dr. Biswarup Paul, Salvatore De Pasquale, Jamila Butt, Masanori Ogino, Fabrizio Grosa, Lorenzo De Cilladi, Felix Reidt, James Philip Iddon, Mike Sas, Jorge López, Professor David Evans, Davide Pagano, Smbat Grigoryan, Sergey Nikolaev, Leticia Cunqueiro, Borge S Nielsen, Francesca Carnesecchi, Gergely Gábor Barnaföldi, Sebastian Koryciak, Stefania Beole', Jeremy Wilkinson, Jens-Jorgen Gaardhoje, Dong Jo Kim, Krzysztof Redlich, Thomas Peitzmann, Kristjan Gulbrandsen, Christine Nattrass, Francesca Bellini, Vladimir Kovalenko, Tomas Herman, Antonio Uras, Domenico Di Bari, Francesca Ercolessi, LUIGI DELLO STRITTO, Mohd Danish Azmi, Johan Alme, Tiziano Virgili, Andreas Mathis, ALEXANDER BOLOZDYNYA, Federico Ronchetti, David Silvermyr, Kai Schweda, Simone Ragoni, Petra Loncar, Adrian Sevcenco, Przemyslaw Karczmarczyk, Kenneth Read, Francesca Soramel, Meenakshi Sharma, Vladimir Vechernin, Andrea Ferrero, Lukas Nellen, Roman Lavicka, Sang Un Ahn, Mattia Faggin, Wladyslaw Henryk Trzaska, Syaefudin Jaelani, Raimond Snellings, Marek Gorgon, Markus Keil, Guillaume Batigne, Paul Buehler, Vladimir Zherebchevsky, Rashmi Raniwala, Yury Melikyan, Luciano Ramello, Sergey Fokin, Roy Lemmon, Anisa Khatun, Nicolò Jacazio, NEELIMA AGRAWAL, Sami Räsänen, Michael Winn, Daniele De Gruttola, Marie Germain, Gianluca Usai, Marco Van Leeuwen, Luca Barioglio, Javier Castillo Castellanos, Enrico Scomparin, Anju Bhasin, Anton Alkin, Gabriele Fiorenza, Jacek Kitowski, Chiara De Martin, In-Kwon Yoo, Jun Takahashi, Serpil Yalcin Kuzu, Peter Christiansen, Antonina Rosano, Valentina Zaccolo, Paolo Camerini, Lidia Goerlich, Bartosz Balis, Otwinowski Jacek, Laurent Aphecetche, Chiara Pinto, Cesar Ceballos, Dr. Sushanta Tripathy, Guillaume Taillepied, Sean Murray, Fernando Antonio Flor, Ian Bearden, Małgorzata Janik, Rahul Ramachandran Nair, Chiara Oppedisano, Piotr Gasik, Marcello Lunardon, and Francesco Prino

Subjects
010308 nuclear & particles physics, 0103 physical sciences, General Physics and Astronomy, 010306 general physics, 01 natural sciences
Published
2022

8. Summary of the $K^- pp$ bound-state observation in E15 and future prospects

Author

Fuminori Sakuma, Shuhei Ajimura, Takaya Akaishi, Hidemitsu Asano, Massimiliano Bazzi, George Beer, Hyoungchan Bhang, Mario Bragadireanu, Paul Buehler, Luigi Busso, Michael Cargnelli, Seonho Choi, Alberto Clozza, Catalina Curceanu, Shun Enomoto, Hiroyuki Fujioka, Yuya Fujiwara, Tomokazu Fukuda, Carlo Guaraldo, Tadashi Hashimoto, Ryugo S. Hayano, Toshihiko Hiraiwa, Masami Iio, Mihai Iliescu, Kentaro Inoue, Yosuke Ishiguro, Takashi Ishikawa, Shigeru Ishimoto, Kenta Itahashi, Masahiko Iwasaki, Masaaki Iwai, Koki Kanno, Kazuma Kato, Yuko Kato, Shingo Kawasaki, Paul Kienle, Hiroshi Kou, Yue Ma, Johann Marton, Yasuyuki Matsuda, Marco Miliucci, Yutaka Mizoi, Ombretta Morra, Rie Murayama, Tomofumi Nagae, Hiroyuki Noumi, Hiroaki Ohnishi, Shinji Okada, Haruhiko Outa, Kyoichiro Ozawa, Kristian Piscicchia, Yuta Sada, Atsushi Sakaguchi, Masaharu Sato, Alessandro Scordo, Michiko Sekimoto, Hexi Shi, Kotaro Shirotori, Diana Sirghi, Florin Sirghi, Shoji Suzuki, Takatoshi Suzuki, Kiyoshi Tanida, Hideyuki Tatsuno, Makoto Tokuda, Dai Tomono, Akihisa Toyoda, Kyo Tsukada, Oton Vázquez Doce, Eberhard Widmann, Takumi Yamaga, Toshimitsu Yamazaki, Chihiro Yoshida, Qi Zhang, and Johann Zmeskal

Abstract

The possible existence of deeply-bound $\bar K$-nuclear bound states, kaonic nuclei, has been widely discussed as products of the strongly attractive $\bar K$Ninteraction in I = 0 channels. Investigations of those exotic states will provide us unique information of the $\bar K$Ninteraction below the threshold, which is still not fully understood so far. Recently, we observed the simplest kaonic nuclei, $\bar K$NN, having a much deeper binding energy than normal nuclei via inflight (K−,N) reactions at the J-PARC E15 experiment. For further studies, we have proposed a series of experimental programs for the systematic investigation of light kaonic nuclei, from $\bar K$N(Λ(1405)) to $\bar K$NNNN. We will measure the $\bar K$NNN(A= 3) system at the new experiment approved as J-PARC E80, as a first step toward a comprehensive study.

Published
2022

10. Measurement of the Cross Sections of Ξc0 and Ξc+ Baryons and of the Branching-Fraction Ratio BR(Ξc0→Ξ−e+νe)/BR(Ξc0→Ξ−π+) in pp Collisions at s=13 TeV

Author

Stefano Boi, Georgy Kornakov, Miroslaw Jablonski, Fabio Catalano, Norbert Novitzky, Lokesh Kumar, Bernhard Hohlweger, John M. Jowett, Barbara Trzeciak, Marek Bombara, Diego Stocco, Rinaldo Rui, Łukasz Kamil Graczykowski, Yvonne Pachmayer, Oton Vazquez Doce, Ivan Kisel, Victor Gonzalez, Andrea Dubla, Arvind Khuntia, Alberto Baldisseri, Lee Barnby, Alexandre Suaide, Anar Rustamov, Alessandro Feliciello, Uliana Dmitrieva, Dr. Biswarup Paul, Salvatore De Pasquale, Jean Cleymans, Jamila Butt, Masanori Ogino, Fabrizio Grosa, Lorenzo De Cilladi, Felix Reidt, Sumit Basu, James Philip Iddon, Mike Sas, Jorge López, Professor David Evans, Davide Pagano, Smbat Grigoryan, Sergey Nikolaev, Leticia Cunqueiro, Borge S Nielsen, Francesca Carnesecchi, Gergely Gábor Barnaföldi, Sebastian Koryciak, Stefania Beole', Jeremy Wilkinson, Jens-Jorgen Gaardhoje, Dong Jo Kim, Krzysztof Redlich, Kristjan Gulbrandsen, Christine Nattrass, Francesca Bellini, Vladimir Kovalenko, Tomas Herman, Antonio Uras, Domenico Di Bari, Francesca Ercolessi, LUIGI DELLO STRITTO, Mohd Danish Azmi, Johan Alme, Tiziano Virgili, Andreas Mathis, ALEXANDER BOLOZDYNYA, Federico Ronchetti, David Silvermyr, Kai Schweda, Simone Ragoni, Petra Loncar, Adrian Sevcenco, Przemyslaw Karczmarczyk, Kenneth Read, Francesca Soramel, Meenakshi Sharma, Vladimir Vechernin, Andrea Ferrero, Lukas Nellen, Roman Lavicka, Sang Un Ahn, Mattia Faggin, Wladyslaw Henryk Trzaska, Syaefudin Jaelani, Raimond Snellings, Marek Gorgon, Markus Keil, Guillaume Batigne, Paul Buehler, Rashmi Raniwala, Yury Melikyan, Luciano Ramello, Marielle Chartier, Sergey Fokin, Roy Lemmon, Anisa Khatun, Nicolò Jacazio, NEELIMA AGRAWAL, Sami Räsänen, Michael Winn, Daniele De Gruttola, Marie Germain, Sandro Christian Wenzel, Gianluca Usai, Marco Van Leeuwen, Luca Barioglio, Javier Castillo Castellanos, Enrico Scomparin, Anju Bhasin, Anton Alkin, Gabriele Fiorenza, Jacek Kitowski, Chiara De Martin, Grigory Feofilov, In-Kwon Yoo, Jun Takahashi, Serpil Yalcin Kuzu, Peter Christiansen, Antonina Rosano, Valentina Zaccolo, Paolo Camerini, Lidia Goerlich, Bartosz Balis, Alberto Martín Gago Medina, Otwinowski Jacek, Laurent Aphecetche, Chiara Pinto, Jose Luis Bazo Alba, Cesar Ceballos, Dr. Sushanta Tripathy, Guillaume Taillepied, Sean Murray, Fernando Antonio Flor, Ian Bearden, Małgorzata Janik, Rahul Ramachandran Nair, Matthew Buckland, Chiara Oppedisano, Piotr Gasik, Marcello Lunardon, and Francesco Prino

Subjects
010308 nuclear & particles physics, 0103 physical sciences, General Physics and Astronomy, 010306 general physics, 01 natural sciences
Published
2021

13. 'K−pp', a K‾-meson nuclear bound state, observed in 3He(K−,Λp)n reactions

Author

S. Kawasaki, K. Itahashi, C. Guaraldo, H. Kou, D. Tomono, Hexi Shi, Atsushi Sakaguchi, Paul Kienle, Florin Sirghi, T. Ishikawa, Michiko Sekimoto, Tomokazu Fukuda, Y. Fujiwara, S. Choi, Shinji Okada, O. Morra, T. Yamaga, Kiyoshi Tanida, T. Suzuki, Haruhiko Outa, Ryugo S. Hayano, Carolina Berucci, T. Yamazaki, L. Busso, Michael Cargnelli, S. Ishimoto, K. Inoue, Akihiro Toyoda, Shun Enomoto, Hiroyuki Noumi, Y. Kato, E. Widmann, Tomofumi Nagae, G. A. Beer, Paul Buehler, K. Kato, S. Ajimura, Masami Iio, Johann Marton, Hiroaki Ohnishi, Catalina Curceanu, Koki Kanno, Yue Ma, Y. Ishiguro, S. Y. Suzuki, K. Piscicchia, M. Sato, O. Vazquez Doce, Mario Bragadireanu, M. Iliescu, Kyo Tsukada, Yutaka Mizoi, H. Asano, J. Zmeskal, Yuji Matsuda, Makoto Tokuda, Hiroyuki Fujioka, Toshihiko Hiraiwa, H. Tatsuno, Ken Suzuki, Y. Sada, H. C. Bhang, Masahiko Iwasaki, Kotaro Shirotori, Q. Zhang, Alessandro Scordo, T. Hashimoto, Fuminori Sakuma, and Diana Sirghi

Subjects
Physics, Nuclear and High Energy Physics, Meson, 010308 nuclear & particles physics, 0103 physical sciences, Bound state, Analytical chemistry, Invariant mass, Strangeness, 010306 general physics, 01 natural sciences
Abstract

We observed a distinct peak in the Λp invariant mass spectrum of He 3 ( K − , Λ p ) n , well below m K + 2 m p , i.e., the mass threshold of the K − to be bound to two protons. By selecting a relatively large momentum-transfer region q = 350 ∼ 650 MeV/c, one can kinematically separate the peak from the quasi-free process, K ‾ N → K ‾ N followed by the non-resonant absorption by the two spectator-nucleons K ‾ N N → Λ N . We found that the simplest fit to the observed peak gives us a Breit–Wigner pole position at B Kpp = 47 ± 3 ( s t a t . ) − 6 + 3 ( s y s . ) MeV having a width Γ Kpp = 115 ± 7 ( s t a t . ) − 20 + 10 ( s y s . ) MeV, and the S-wave Gaussian reaction form-factor parameter Q Kpp = 381 ± 14 ( s t a t . ) − 0 + 57 ( s y s . ) MeV/c, as a new form of the nuclear bound system with strangeness – “ K − p p ”.

Published
2019

14. Pion-kaon femtoscopy in Pb–Pb collisions at sNN=2.76TeV measured with ALICE

Author

Salvatore De Pasquale, Masanori Ogino, Borge S Nielsen, Francesca Carnesecchi, Jens-Jorgen Gaardhoje, Mais Suleymanov, Thomas Peitzmann, Kristjan Gulbrandsen, Christopher Hills, Francesca Bellini, Petra Loncar, Adrian Sevcenco, Ashutosh Kumar Pandey, Francesca Soramel, Lukas Nellen, Paul Buehler, Marielle Chartier, Christian Bourjau, You Zhou, Serpil Yalcin Kuzu, and Adela Kravcakova

Subjects
Physics, Nuclear and High Energy Physics, Large Hadron Collider, 010308 nuclear & particles physics, media_common.quotation_subject, Nuclear Theory, Charge (physics), Rest frame, Size parameter, 01 natural sciences, Asymmetry, Nuclear physics, Pion, 0103 physical sciences, High Energy Physics::Experiment, ALICE (propellant), Nuclear Experiment, 010306 general physics, media_common
Abstract

Femtoscopic correlations between charged pions and kaons for different charge combinations are measured in Pb–Pb collisions at s NN = 2.76 TeV with ALICE at the LHC. The three-dimensional pion-kaon ( π − K ) correlation functions and double ratios in the out-side-long pair rest frame are studied in different centrality bins. The π − K femtoscopic source size parameter (Rout) and emission asymmetry (μout) are extracted. It is observed that the average source size of the system and the emission asymmetry between pions and kaons increase from peripheral to central events.

Published
2019

15. Recent Results and Future Prospects of Kaonic Nuclei at J-PARC

Author

M. Simon, C. Yoshida, Takashi Ishikawa, K. Inoue, Yuuki Fujiwara, D. Tomono, S. Kawasaki, Hiroyuki Fujioka, Kotaro Shirotori, Kristian Piscicchia, Atsushi Sakaguchi, Florin Sirghi, Toshimitsu Yamazaki, M. Bragadireanu, G. Beer, S. Choi, Kenta Itahashi, H. Outa, Koki Kanno, O. Morra, Massimiliano Bazzi, M. Cargnelli, Hiroyuki Noumi, M. Iwai, Catalina Curceanu, Alessandro Scordo, T. Hashimoto, M. Sato, Paul Kienle, Michiko Sekimoto, Kyo Tsukada, Kiyoshi Tanida, Hyeongchan Bhang, D. L. Sirghi, T. Akaishi, R. Murayama, H. Asano, Alberto Clozza, Y. Ishiguro, C. Guaraldo, Hirofumi Kou, Y. Kato, Yuji Matsuda, Yue Ma, Tomofumi Nagae, Fuminori Sakuma, Y. Sada, M. Iliescu, Toshihiko Hiraiwa, Qi Zhang, L. Busso, S. Ishimoto, Johannes Zmeskal, Tomokazu Fukuda, Ryugo S. Hayano, Yutaka Mizoi, Eberhard Widmann, Akihisa Toyoda, Masahiko Iwasaki, Hexi Shi, J. Marton, Shun Enomoto, Kyoichiro Ozawa, Shoji Suzuki, M. Miliucci, Makoto Tokuda, T. Yamaga, Paul Buehler, K. Kato, H. Tatsuno, O. Vazquez Doce, Takatoshi Suzuki, S. Ajimura, Masami Iio, Hiroaki Ohnishi, and Shinji Okada

Subjects
Physics, Particle physics, Nuclear Theory, Series (mathematics), Binding energy, FOS: Physical sciences, Lambda, Measure (mathematics), Atomic and Molecular Physics, and Optics, Nuclear Theory (nucl-th), J-PARC, Nuclear Experiment (nucl-ex), Nuclear Experiment, Beam (structure), Bar (unit)
Abstract

$\bar K$-nuclear bound systems, kaonic nuclei, have been widely discussed as products of the strongly attractive $\bar K N$ interaction in $I = 0$ channels. Recently, we demonstrated that kaonic nuclei can be produced via in-flight $(K^-,N)$ reactions using the low-momentum DC kaon beam at the J-PARC E15 experiment. We observed the simplest kaonic nuclei, $K^-pp$, having a much deeper binding energy than normal nuclei. For further studies, we have proposed a series of experimental programs for the systematic investigation of light kaonic nuclei, from $\bar K N$ ($\Lambda(1405)$) to $\bar K NNNN$. In the new experiment approved as J-PARC E80, we will measure the $\bar K NNN$ ($A=3$) system as a first step toward a comprehensive study., Comment: 10 pages, 5 figures, proceedings of the 8th Asia-Pacific Conference on Few-Body Problems in Physics (APFB2020), accepted for publication in Fwe-Body Systems

Published
2021

16. (\bar{K}\)-Nuclear Bound State at J-PARC

Author

G. Beer, Michiko Sekimoto, L. Busso, Alessandro Scordo, Mario Bragadireanu, Ryugo S. Hayano, T. Hashimoto, K. Inoue, C. Guaraldo, Shoji Suzuki, Koki Kanno, Shigeru Ishimoto, O. Morra, Makoto Tokuda, Y. Sada, H. Asano, Johannes Zmeskal, Akihisa Toyoda, Diana Sirghi, Toshihiko Hiraiwa, M. Sato, Johann Marton, Michael Cargnelli, Y. Ishiguro, Paul Buehler, K. Kato, Y. Kato, Fuminori Sakuma, Paul Kienle, Kyo Tsukada, Kenta Itahashi, H. Tatsuno, Ken Suzuki, M. Iliescu, Yasuyuki Matsuda, Kotaro Shirotori, Kristian Piscicchia, T. Yamaga, Kiyoshi Tanida, Hexi Shi, H. Kou, Haruhiko Outa, Hiroyuki Noumi, Yue Ma, Takashi Ishikawa, S. Kawasaki, Oton Vazquez Doce, Hyoungchan Bhang, Catalina Curceanu, Hiroyuki Fujioka, Carolina Berucci, Tomokazu Fukuda, Y. Fujiwara, Florin Sirghi, Shinji Okada, D. Tomono, Takatoshi Suzuki, Atsushi Sakaguchi, S. Ajimura, Masami Iio, Hiroaki Ohnishi, Yutaka Mizoi, Toshimitsu Yamazaki, Tomofumi Nagae, Shun Enomoto, Seonho Choi, Qi Zhang, Eberhard Widmann, and Masahiko Iwasaki

Subjects
Nuclear physics, Physics, Bar (music), Bound state, J-PARC
Published
2020

17. K - Pp bound system at J-PARC

Author

Eberhard Widmann, M. Iliescu, Haruhiko Outa, Hiroaki Ohnishi, K. Inoue, Yasuyuki Matsuda, Hiroyuki Noumi, Takashi Ishikawa, Makoto Tokuda, Masahiko Iwasaki, H. Tatsuno, Akihisa Toyoda, Toshimitsu Yamazaki, D. Tomono, M. Sato, Paul Kienle, Ken Suzuki, Michael Cargnelli, Kotaro Shirotori, Florin Sirghi, Hiroyuki Fujioka, Atsushi Sakaguchi, G. Beer, Oton Vazquez Doce, Shun Enomoto, Shinji Okada, Yue Ma, Hyoungchan Bhang, Mario Bragadireanu, Paul Buehler, K. Kato, Alessandro Scordo, T. Hashimoto, H. Kou, O. Morra, Johann Marton, Catalina Curceanu, Johannes Zmeskal, Y. Kato, Carolina Berucci, S. Kawasaki, Takatoshi Suzuki, Seonho Choi, L. Busso, S. Ajimura, Tomofumi Nagae, Masami Iio, Fuminori Sakuma, Y. Ishiguro, Qi Zhang, Y. Sada, Tomokazu Fukuda, Y. Fujiwara, Yutaka Mizoi, Kyo Tsukada, C. Guaraldo, Ryugo S. Hayano, H. Asano, Toshihiko Hiraiwa, Shigeru Ishimoto, Koki Kanno, Shoji Suzuki, Kristian Piscicchia, T. Yamaga, Kiyoshi Tanida, Hexi Shi, Diana Sirghi, Michiko Sekimoto, and Kenta Itahashi

Subjects
Physics, Binding energy, Bound state, J-PARC, State (functional analysis), Atomic physics
Abstract

The K¯NN bound system, symbolically denoted as “K−pp”, is the simplest K¯-nuclear bound system which has been widely discussed as a consequence of the strongly attractive K¯N interaction in I = 0 channels. Many theoretical works have pointed out the existence of the “K−pp” bound system, but the calculated properties such as the binding energy and the width spread out due to the uncertainty of the K¯N interaction below the K¯+N mass threshold. Experimentally, there are several reports on observation of a “K−pp” candidate with the binding energy of around 100 MeV, however, no definitive evidence was available so far. At J-PARC, we conducted a experimental search for the “K−pp” bound system using K− + 3He reaction at 1.0 GeV/c where the “K−pp” is expected to be directly produced via the (K−, n) reaction. We finally observed a bound state below the K− +p+p mass threshold in the Λpn final state, which can be interpreted as the “K− pp” bound state. The possible existence of the “K− pp” state is discussed from both aspects of production and decay.

Published
2020

18. Direct photon elliptic flow in Pb–Pb collisions at sNN=2.76TeV

Author

Salvatore De Pasquale, Masanori Ogino, Mike Sas, Borge S Nielsen, Jens-Jorgen Gaardhoje, Mais Suleymanov, Thomas Peitzmann, Kristjan Gulbrandsen, Christopher Hills, Francesca Bellini, Vladimir Kovalenko, Petra Loncar, Adrian Sevcenco, Francesca Soramel, Lukas Nellen, Paul Buehler, Marielle Chartier, Christian Bourjau, You Zhou, Serpil Yalcin Kuzu, and Adela Kravcakova

Subjects
Physics, Nuclear and High Energy Physics, Range (particle radiation), Photon, 010308 nuclear & particles physics, Elliptic flow, Physics::Optics, 01 natural sciences, Nuclear physics, Electromagnetic calorimeter, Flow (mathematics), 0103 physical sciences, Transverse momentum, 010306 general physics
Abstract

The elliptic flow of inclusive and direct photons was measured by ALICE for central and semi-central Pb–Pb collisions at s NN = 2.76 TeV . The photons were reconstructed using the electromagnetic calorimeter PHOS and the central tracking system. The inclusive photon flow reconstructed with both methods are combined and used to extract the direct photon flow, using a decay photon simulation and the direct photon excess R γ , in the transverse momentum range 0.9 p T c . We find that the theoretical predictions generally under-predict the results.

Published
2019

19. Measurement of charged jet cross section in pp collisions at s=5.02 TeV

Author

Fabio Catalano, Lokesh Kumar, Bernhard Hohlweger, Barbara Trzeciak, Marek Bombara, Diego Stocco, Rinaldo Rui, Yvonne Pachmayer, Oton Vazquez Doce, Toru Sugitate, Souvik Priyam Adhya, Ivan Kisel, Victor Gonzalez, Jana Crkovska, Janka Vrlakova, Juan Carlos Cabanillas Noris, Andrea Dubla, Arvind Khuntia, Prabhakar Palni, Yaroslav Berdnikov, Christoph Blume, Eberhard Widmann, Jussi Viinikainen, Lee Barnby, Alexandre Suaide, Anar Rustamov, Alessandro Feliciello, Uliana Dmitrieva, Dr. Biswarup Paul, Salvatore De Pasquale, Jamila Butt, Masanori Ogino, Ketil Røed, Fabrizio Grosa, Felix Reidt, Sumit Basu, Mirko Planinic, Jiri A. Mares, James Philip Iddon, Mike Sas, Ashim Roy, Janusz Oleniacz, Yue Shi Lai, Professor David Evans, Tome Anticic, Davide Pagano, Salvatore Aiola, Ciprian Mihai MITU, Smbat Grigoryan, Sergey Nikolaev, Manoj Bhanudas Jadhav, Claude Pruneau, Leticia Cunqueiro, Borge S Nielsen, Francesca Carnesecchi, Gergely Gábor Barnaföldi, Ramona Lea, Rafael Derradi de Souza, Jeremy Wilkinson, Jens-Jorgen Gaardhoje, Mais Suleymanov, Alexander Akindinov, Andres Gomez Ramirez, Igor Pshenichnov, Marco Toppi, Dong Jo Kim, Krzysztof Redlich, Thomas Peitzmann, Leo Greiner, Kristjan Gulbrandsen, Christine Nattrass, Ranjit Nayak, Danilo Silva de Albuquerque, Francesca Bellini, Vladimir Kovalenko, Debasish Das, Pietro Fecchio, Antonio Uras, Domenico Di Bari, Mohd Danish Azmi, Johan Alme, Tiziano Virgili, Andrea Festanti, Andreas Mathis, ALEXANDER BOLOZDYNYA, Federico Ronchetti, David Silvermyr, Victor Riabov, Tahir Hussain, Kai Schweda, Simone Ragoni, Petra Loncar, Jan Figiel, Adrian Sevcenco, Przemyslaw Karczmarczyk, Kenneth Read, Ashutosh Kumar Pandey, Francesca Soramel, Piotr Konopka, Thomas Dietel, Timo Hilden, Vladimir Vechernin, Daniel Dąbrowski, Lukas Nellen, Roman Lavicka, Sang Un Ahn, Mattia Faggin, Paula Fernanda Toledo Matuoka, Nikola Poljak, Rutuparna Rath, Ayben Karasu Uysal, Wladyslaw Henryk Trzaska, Jakub Kvapil, Vladyslav Litichevskyi, Syaefudin Jaelani, Matteo Lupi, Raimond Snellings, Markus Keil, Guillaume Batigne, Erwann Masson, Nirbhay Kumar Behera, Rafael Peretti Pezzi, Paul Buehler, Vladimir Zherebchevsky, Mikael Mieskolainen, Rashmi Raniwala, Chinorat Kobdaj, Yury Melikyan, Luciano Ramello, Susanna COSTANZA, Marielle Chartier, Sergey Fokin, Roy Lemmon, Samrangy Sadhu, Anisa Khatun, Roberto Barbera, Andrey Erokhin, Nicolò Jacazio, Sami Räsänen, Daniele De Gruttola, Marie Germain, Christian Bourjau, Sandro Christian Wenzel, Sergey Gorbunov, Gianluca Usai, Marco Van Leeuwen, David Chinellato, Dmitry Blau, Somnath Kar, Luca Barioglio, Javier Castillo Castellanos, Valentina Mantovani Sarti, Federico Cindolo, Enrico Scomparin, Anju Bhasin, Petr Závada, Anton Alkin, Elisa Meninno, Gabriele Fiorenza, Friederike Bock, Adam Kisiel, Christopher Anson, Grigory Feofilov, You Zhou, In-Kwon Yoo, Jun Takahashi, Sandra Moretto, Serpil Yalcin Kuzu, Peter Christiansen, Lucas Altenkämper, Piotr Nowakowski, Valentina Zaccolo, Barbara Guerzoni, Paolo Camerini, Domenico Colella, Lidia Goerlich, Przemyslaw Rokita, Alberto Martín Gago Medina, Otwinowski Jacek, Laurent Aphecetche, Antonio Bianchi, Jose Luis Bazo Alba, Mikhail Zhalov, Cesar Ceballos, Michael Weber, Dr. Sushanta Tripathy, Sean Murray, Kenta Shigaki, Fernando Antonio Flor, Ian Bearden, Rahul Ramachandran Nair, Miguel Arratia, Matthew Buckland, Tasnuva Chowdhury, Chiara Oppedisano, Piotr Gasik, Adela Kravcakova, Marcello Borri, Marcello Lunardon, and Francesco Prino

Subjects
Physics, Quantum chromodynamics, Jet (fluid), Range (particle radiation), Large Hadron Collider, 010308 nuclear & particles physics, Resolution (electron density), 01 natural sciences, Charged particle, Nuclear physics, Cross section (physics), Pseudorapidity, 0103 physical sciences, High Energy Physics::Experiment, Nuclear Experiment, 010306 general physics
Abstract

The cross section of jets reconstructed from charged particles is measured in the transverse momentum range of 5 < pT

Published
2019

20. Results of \(\bar{K}NN\) Search via the (K−, n) Reaction at J-PARC

Author

Hexi Shi, Paul Kienle, L. Busso, Florin Sirghi, Michael Cargnelli, Y. Sada, Shinji Okada, Oton Vazquez Doce, Carolina Berucci, Catalina Curceanu, Ryugo S. Hayano, C. Guaraldo, Shun Enomoto, Johann Zmeskal, Johann Marton, Takashi Ishikawa, Kotaro Shirotori, O. Morra, H. Tatsuno, T. Yamaga, S. Kawasaki, Toshimitsu Yamazaki, Paul Buehler, Kiyoshi Tanida, Ken Suzuki, Y. Ishiguro, D. Tomono, K. Kato, Yue Ma, H. Asano, Shigeru Ishimoto, Y. Kato, Atsushi Sakaguchi, Mario Bragadireanu, Toshihiko Hiraiwa, M. Iliescu, M. Sato, Yutaka Mizoi, Eberhard Widmann, Hiroyuki Fujioka, Michiko Sekimoto, Takatoshi Suzuki, Kyo Tsukada, Yasuyuki Matsuda, Kristian Piscicchia, Hyeongchan Bhang, Tomokazu Fukuda, S. Ajimura, Masahiko Iwasaki, Haruhiko Outa, Masami Iio, Y. Fujiwara, Makoto Tokuda, Hiroaki Ohnishi, Tomofumi Nagae, Hiroyuki Noumi, Seonho Choi, Qi Zhang, Akihisa Toyoda, Fuminori Sakuma, G. Beer, Alessandro Scordo, T. Hashimoto, K. Inoue, Kenta Itahashi, Diana Sirghi, Hirofumi Kou, Koki Kanno, and Shoji Suzuki

Subjects
Physics, Bar (music), Analytical chemistry, J-PARC
Published
2019

21. Λ(1405) Spectroscopy via the In-flight d(K−, n) Reaction at the J-PARC K1.8BR

Author

Florin Sirghi, Kotaro Shirotori, T. Akaishi, Michiko Sekimoto, Tomofumi Nagae, Takatoshi Suzuki, M. Iliescu, Hiroyuki Fujioka, Eberhard Widmann, S. Ajimura, Masami Iio, Hiroaki Ohnishi, Johann Zmeskal, Paul Buehler, K. Kato, Masahiko Iwasaki, Yasuyuki Matsuda, Kyo Tsukada, Johann Marton, Kristian Piscicchia, Toshimitsu Yamazaki, Shun Enomoto, Shinji Okada, G. Beer, H. Asano, C. Guaraldo, Paul Kienle, S. Kawasaki, Shu Aikawa, Yutaka Mizoi, Tomokazu Fukuda, Makoto Tokuda, Takashi Ishikawa, Toshihiko Hiraiwa, Y. Kato, Alessandro Scordo, T. Hashimoto, Shigeru Ishimoto, O. Morra, K. Inoue, Yue Ma, Ryugo S. Hayano, Y. Fujiwara, Haruhiko Outa, Catalina Curceanu, Zhadyra Omar, M. Iwai, Fuminori Sakuma, Kenta Itahashi, Yusuke Komatsu, Akihisa Toyoda, Hiroyuki Noumi, A. O. Tokiyasu, D. Tomono, Diana Sirghi, Atsushi Sakaguchi, Hirofumi Kou, Y. Ishiguro, H. Yim, L. Busso, Y. Sada, Shoji Suzuki, Koki Kanno, M. Sato, H. Tatsuno, Michael Cargnelli, Ken Suzuki, Mario Bragadireanu, Hexi Shi, T. Yamaga, Kiyoshi Tanida, Seonho Choi, Qi Zhang, Carolina Berruci, and Oton Vazquez Doce

Subjects
Physics, Analytical chemistry, J-PARC, Spectroscopy
Published
2019

22. Two-particle differential transverse momentum and number density correlations in p−Pb collisions at 5.02 TeV and Pb-Pb collisions at 2.76 TeV at the CERN Large Hadron Collider

Author

Podist Kurashvili, Lokesh Kumar, Bernhard Hohlweger, Marek Bombara, Diego Stocco, Rinaldo Rui, Łukasz Kamil Graczykowski, Yvonne Pachmayer, Oton Vazquez Doce, Toru Sugitate, Subhasis Chattopadhyay, Ivan Kisel, Victor Gonzalez, Janka Vrlakova, Juan Carlos Cabanillas Noris, Zmeskal Johann, Andrea Dubla, Arvind Khuntia, Prabhakar Palni, Yaroslav Berdnikov, Christoph Blume, Lee Barnby, Alexandre Suaide, Anar Rustamov, Alessandro Feliciello, Dr. Biswarup Paul, Salvatore De Pasquale, Boris Teyssier, Jamila Butt, Prabhat Ranjan Pujahari, Ketil Røed, Fabrizio Grosa, Felix Reidt, Sumit Basu, Mirko Planinic, Jiri A. Mares, James Philip Iddon, Mike Sas, Janusz Oleniacz, Yue Shi Lai, Professor David Evans, Tome Anticic, Davide Pagano, Salvatore Aiola, Ciprian Mihai MITU, Smbat Grigoryan, Sergey Nikolaev, Manoj Bhanudas Jadhav, Andrew Lowe, Claude Pruneau, Leticia Cunqueiro, Borge S Nielsen, Francesca Carnesecchi, Gergely Gábor Barnaföldi, Ramona Lea, Rafael Derradi de Souza, Jeremy Wilkinson, Jens-Jorgen Gaardhoje, Mais Suleymanov, Alexander Akindinov, Andres Gomez Ramirez, Igor Pshenichnov, Marco Toppi, Krzysztof Redlich, Thomas Peitzmann, Leo Greiner, Kristjan Gulbrandsen, Christine Nattrass, Ranjit Nayak, Danilo Silva de Albuquerque, Benedetto Di Ruzza, Francesca Bellini, Vladimir Kovalenko, Debasish Das, Antonio Uras, Domenico Di Bari, Mohd Danish Azmi, Johan Alme, Tiziano Virgili, Indranil Das, Jeremi Niedziela, Andrea Festanti, Andreas Mathis, Federico Ronchetti, David Silvermyr, Victor Riabov, Tahir Hussain, Kai Schweda, Petra Loncar, Jan Figiel, Adrian Sevcenco, Przemyslaw Karczmarczyk, Kenneth Read, Ashutosh Kumar Pandey, Francesca Soramel, Thomas Dietel, Timo Hilden, Vladimir Vechernin, Lukas Nellen, Roman Lavicka, Sang Un Ahn, Mattia Faggin, Paula Fernanda Toledo Matuoka, Catia Maria Annunziata Petta, Nikola Poljak, Ayben Karasu Uysal, Wladyslaw Henryk Trzaska, Jakub Kvapil, Vladyslav Litichevskyi, Syaefudin Jaelani, Matteo Lupi, Raimond Snellings, Markus Keil, Guillaume Batigne, Erwann Masson, Nirbhay Kumar Behera, Rafael Peretti Pezzi, Paul Buehler, Vladimir Zherebchevsky, Mikael Mieskolainen, Rashmi Raniwala, Chinorat Kobdaj, Yury Melikyan, Luciano Ramello, Susanna COSTANZA, Marielle Chartier, Sergey Fokin, Roy Lemmon, Samrangy Sadhu, Roberto Barbera, Nicolò Jacazio, Sami Räsänen, Daniele De Gruttola, Marie Germain, Christian Bourjau, Sergey Gorbunov, Gianluca Usai, Marco Van Leeuwen, David Chinellato, Somnath Kar, Luca Barioglio, Javier Castillo Castellanos, Federico Cindolo, Enrico Scomparin, Anju Bhasin, Petr Závada, Hector Bello Martinez, Anton Alkin, Elisa Meninno, Gabriele Fiorenza, Friederike Bock, Adam Kisiel, Christopher Anson, Grigory Feofilov, You Zhou, In-Kwon Yoo, Sandra Moretto, Serpil Yalcin Kuzu, Peter Christiansen, Lucas Altenkämper, Valentina Zaccolo, Barbara Guerzoni, Paolo Camerini, Domenico Colella, Lidia Goerlich, Alberto Martín Gago Medina, Otwinowski Jacek, Laurent Aphecetche, Antonio Bianchi, Jose Luis Bazo Alba, Mikhail Zhalov, Cesar Ceballos, Michael Weber, Dr. Sushanta Tripathy, Sean Murray, Kenta Shigaki, Fernando Antonio Flor, Ian Bearden, Małgorzata Janik, Rahul Ramachandran Nair, Tasnuva Chowdhury, Chiara Oppedisano, Piotr Gasik, Adela Kravcakova, Marcello Borri, Marcello Lunardon, and Francesco Prino

Subjects
Physics, Range (particle radiation), Large Hadron Collider, 010308 nuclear & particles physics, High Energy Physics::Phenomenology, Multiplicity (mathematics), Parton, 7. Clean energy, 01 natural sciences, Charged particle, Nuclear physics, 0103 physical sciences, Quark–gluon plasma, High Energy Physics::Experiment, Rapidity, Nuclear Experiment, 010306 general physics, Event (particle physics)
Abstract

The production cross section and the transverse momentum distribution of charged particles is measured in pp collisions at √s = 2.76 TeV, 5.02 TeV, 7 TeV and 13 TeV, as well as for Pb-Pb collision at √s_NN = 5.02 TeV and Xe-Xe at √s_NN = 5.44 TeV in ALICE at the LHC. The measurement is performed in the transverse momentum region of 0.15 results show a faster-than-linear increase with the center-of-mass energy and follow a similar trend with respect to previous measurements. The analysis of the p_T spectra in multiplicity intervals show a weak center-of-mass energy dependence when they are compared to their respective inelastic (INEL) pp measurement. The average multiplicity as a function of the collision energy shows a quadratic trend, and the comparison with other ALICE multiplicity measurements exhibits a remarkable agreement, within uncertainties.The transverse momentum spectra in pp collisions are compared to state-of-the-art MC simulations, EPOS LHC and PYTHIA 8 event generators; none of them is able to reproduce the distributions over the full p_T range. The differential cross section in pp collisions is an essential observable for the study of the Quark Gluon Plasma (QGP) created in ultra-relativistic heavy-ion collisions. The absence of a medium formation in pp collisions serves as an essential baseline for studies of particle production and suppression due to parton energy-loss in the QGP. Since pp collisions at √s = 5.44 TeV were not measured by ALICE, the pp reference at this energy was constructed by using a power law interpolation between the s = 5.02 TeV and 7 TeV data. The pp results are compared to the particle production in Pb-Pb collisions at √s_NN = 5.02 TeV and Xe-Xe collisions at √s_NN = 5.44 TeV. The nuclear modification factor R_AA for Pb-Pb and Xe-Xe collisions was calculated and a strong suppression of high-p_T particles is observed in central collisions. The R AA in different systems allows for a differential study of the parton energy loss in the QGP. The comparison of the R AA in multiplicity intervals between the two systems provide insights into the path length dependence of a parton that propagates in the medium.

Published
2019

23. One-dimensional charged kaon femtoscopy in p -Pb collisions at sNN = 5.02 TeV

Author

Fabio Catalano, Podist Kurashvili, Lokesh Kumar, Bernhard Hohlweger, Marek Bombara, Diego Stocco, Rinaldo Rui, Łukasz Kamil Graczykowski, Yvonne Pachmayer, Oton Vazquez Doce, Toru Sugitate, Souvik Priyam Adhya, Subhasis Chattopadhyay, Ivan Kisel, Victor Gonzalez, Jana Crkovska, Janka Vrlakova, Andrea Dubla, Arvind Khuntia, Prabhakar Palni, Yaroslav Berdnikov, Christoph Blume, Eberhard Widmann, Lee Barnby, Alexandre Suaide, Amalia Pop, Anar Rustamov, Alessandro Feliciello, Uliana Dmitrieva, Dr. Biswarup Paul, Salvatore De Pasquale, Jean Cleymans, Jamila Butt, Masanori Ogino, Ketil Røed, Fabrizio Grosa, Felix Reidt, Sumit Basu, Mirko Planinic, Jiri A. Mares, James Philip Iddon, Mike Sas, Ashim Roy, Janusz Oleniacz, Yue Shi Lai, Professor David Evans, Tome Anticic, Davide Pagano, Salvatore Aiola, Ciprian Mihai MITU, Smbat Grigoryan, Sergey Nikolaev, Manoj Bhanudas Jadhav, Claude Pruneau, Leticia Cunqueiro, Borge S Nielsen, Francesca Carnesecchi, Gergely Gábor Barnaföldi, Ramona Lea, Rafael Derradi de Souza, Jeremy Wilkinson, Jens-Jorgen Gaardhoje, Mais Suleymanov, Alexander Akindinov, Andres Gomez Ramirez, Igor Pshenichnov, Marco Toppi, Dong Jo Kim, Krzysztof Redlich, Thomas Peitzmann, Leo Greiner, Kristjan Gulbrandsen, Christine Nattrass, Ranjit Nayak, Danilo Silva de Albuquerque, Francesca Bellini, Vladimir Kovalenko, Debasish Das, Pietro Fecchio, Antonio Uras, Domenico Di Bari, Mohd Danish Azmi, Johan Alme, Tiziano Virgili, Indranil Das, Andrea Festanti, Andreas Mathis, Federico Ronchetti, David Silvermyr, Victor Riabov, Tahir Hussain, Kai Schweda, Simone Ragoni, Petra Loncar, Jan Figiel, Adrian Sevcenco, Przemyslaw Karczmarczyk, Kenneth Read, Ashutosh Kumar Pandey, Francesca Soramel, Piotr Konopka, Thomas Dietel, Timo Hilden, Vladimir Vechernin, Daniel Dąbrowski, Lukas Nellen, Roman Lavicka, Sang Un Ahn, Mattia Faggin, Paula Fernanda Toledo Matuoka, Nikola Poljak, Rutuparna Rath, Ayben Karasu Uysal, Wladyslaw Henryk Trzaska, Jakub Kvapil, Vladyslav Litichevskyi, Syaefudin Jaelani, Matteo Lupi, Raimond Snellings, Markus Keil, Guillaume Batigne, Erwann Masson, Nirbhay Kumar Behera, Rafael Peretti Pezzi, Paul Buehler, Vladimir Zherebchevsky, Mikael Mieskolainen, Rashmi Raniwala, Chinorat Kobdaj, Yury Melikyan, Luciano Ramello, Susanna COSTANZA, Marielle Chartier, Sergey Fokin, Roy Lemmon, Samrangy Sadhu, Anisa Khatun, Roberto Barbera, Andrey Erokhin, Nicolò Jacazio, Sami Räsänen, Daniele De Gruttola, Piero Giubilato, Marie Germain, Christian Bourjau, Sergey Gorbunov, Gianluca Usai, Marco Van Leeuwen, David Chinellato, Somnath Kar, Luca Barioglio, Javier Castillo Castellanos, Valentina Mantovani Sarti, Federico Cindolo, Enrico Scomparin, Anju Bhasin, Petr Závada, Anton Alkin, Elisa Meninno, Gabriele Fiorenza, Friederike Bock, Adam Kisiel, Christopher Anson, Grigory Feofilov, You Zhou, In-Kwon Yoo, Sandra Moretto, Serpil Yalcin Kuzu, Peter Christiansen, Lucas Altenkämper, Piotr Nowakowski, Valentina Zaccolo, Barbara Guerzoni, Paolo Camerini, Domenico Colella, Lidia Goerlich, Alberto Martín Gago Medina, Otwinowski Jacek, Laurent Aphecetche, Antonio Bianchi, Jose Luis Bazo Alba, Mikhail Zhalov, Cesar Ceballos, Michael Weber, Dr. Sushanta Tripathy, Sabyasachi Siddhanta, Sean Murray, Kenta Shigaki, Ian Bearden, Małgorzata Janik, Rahul Ramachandran Nair, Miguel Arratia, Matthew Buckland, Tasnuva Chowdhury, Chiara Oppedisano, Piotr Gasik, Adela Kravcakova, Marcello Borri, Marcello Lunardon, and Francesco Prino

Subjects
Physics, Large Hadron Collider, Proton, 010308 nuclear & particles physics, Hadron, Interaction model, Multiplicity (mathematics), Few-body systems, 01 natural sciences, law.invention, Nuclear physics, Pion, law, 0103 physical sciences, High Energy Physics::Experiment, Nuclear Experiment, 010306 general physics, Bose–Einstein condensate
Abstract

The correlations of identical charged kaons were measured in p-Pb collisions at √sNN=5.02 TeV by the ALICE experiment at the LHC. The femtoscopic invariant radii and correlation strengths were extracted from one-dimensional kaon correlation functions and were compared with those obtained in pp and Pb-Pb collisions at √s=7 TeV and √sNN=2.76 TeV, respectively. The presented results also complement the identical-pion femtoscopic data published by the ALICE collaboration. The extracted radii increase with increasing charged-particle multiplicity and decrease with increasing pair transverse momentum. At comparable multiplicities, the radii measured in p-Pb collisions are found to be close to those observed in pp collisions. The obtained femtoscopic parameters are reproduced by the EPOS 3 hadronic interaction model and disfavor models with large initial size or strong collective expansion at low multiplicities.

Published
2019

24. Relative particle yield fluctuations in $$\text{ Pb--Pb }$$ Pb--Pb collisions at $$\sqrt{s_\mathrm{{NN}}} =2.76\hbox { TeV}$$ s NN = 2.76 TeV

Author

Podist Kurashvili, Bernhard Hohlweger, Barbara Trzeciak, Marek Bombara, Diego Stocco, Rinaldo Rui, Łukasz Kamil Graczykowski, Yvonne Pachmayer, Oton Vazquez Doce, Toru Sugitate, Subhasis Chattopadhyay, Victor Gonzalez, Janka Vrlakova, Juan Carlos Cabanillas Noris, Zmeskal Johann, Arvind Khuntia, Prabhakar Palni, Yaroslav Berdnikov, Christoph Blume, Jussi Viinikainen, Lee Barnby, Alexandre Suaide, Amalia Pop, Anar Rustamov, Pasquale Di Nezza, Alessandro Feliciello, Dr. Biswarup Paul, Salvatore De Pasquale, Jean Cleymans, Jamila Butt, Ketil Røed, Nikolay Zaviyalov, Fabrizio Grosa, Sumit Basu, Mirko Planinic, Jiri A. Mares, Mike Sas, Janusz Oleniacz, Yue Shi Lai, Professor David Evans, Davide Pagano, Salvatore Aiola, Ciprian Mihai MITU, Smbat Grigoryan, Sergey Nikolaev, Manoj Bhanudas Jadhav, Andrew Lowe, Claude Pruneau, Leticia Cunqueiro, Borge S Nielsen, Francesca Carnesecchi, Gergely Gábor Barnaföldi, Ramona Lea, Lilit Karayan, Stefania Beole', Rafael Derradi de Souza, Valery Kondratiev, Fedor Guber, Jens-Jorgen Gaardhoje, Mais Suleymanov, Christoph Mayer, Alexander Akindinov, Andres Gomez Ramirez, Igor Pshenichnov, Marco Toppi, Krzysztof Redlich, Thomas Peitzmann, Leo Greiner, Kristjan Gulbrandsen, Christine Nattrass, Elena Botta, Ranjit Nayak, Danilo Silva de Albuquerque, Benedetto Di Ruzza, Francesca Bellini, Vladimir Kovalenko, Antonio Ortiz, Debasish Das, Domenico Di Bari, LUCINA GABRIELA ESPINOZA BELTRAN, Arild Velure, Pranjal Sarma, Mohd Danish Azmi, Tiziano Virgili, Indranil Das, Federico Ronchetti, David Silvermyr, Svetlana Ingerman, Victor Riabov, Tahir Hussain, Kai Schweda, Petra Loncar, Jan Figiel, Adrian Sevcenco, Kenneth Read, Ewa Gładysz-Dziaduś, Ashutosh Kumar Pandey, Francesca Soramel, Thomas Dietel, Vladimir Vechernin, Lukas Nellen, Sang Un Ahn, Paula Fernanda Toledo Matuoka, Catia Maria Annunziata Petta, Nikola Poljak, Wladyslaw Henryk Trzaska, Vladyslav Litichevskyi, Syaefudin Jaelani, Matteo Lupi, Raimond Snellings, Markus Keil, Erwann Masson, Nirbhay Kumar Behera, Rafael Peretti Pezzi, Paul Buehler, Andrea Alici, Mikael Mieskolainen, Rashmi Raniwala, Chinorat Kobdaj, Luciano Ramello, Susanna COSTANZA, Arturo Fernandez Tellez, Dhananjaya Thakur, Marielle Chartier, Sergey Fokin, Samrangy Sadhu, Anisa Khatun, Roberto Barbera, Nicolò Jacazio, Sami Räsänen, Daniele De Gruttola, Piero Giubilato, Marie Germain, Christian Bourjau, Sergey Gorbunov, Gianluca Usai, Marco Van Leeuwen, David Chinellato, Giacomo Margagliotti, Somnath Kar, Luca Barioglio, Javier Castillo Castellanos, Federico Cindolo, Enrico Scomparin, Anju Bhasin, Petr Závada, Elisa Meninno, Friederike Bock, Adam Kisiel, Christopher Anson, Grigory Feofilov, You Zhou, In-Kwon Yoo, Jun Takahashi, Sandra Moretto, Serpil Yalcin Kuzu, Tomas Vanat, Peter Christiansen, Lucas Altenkämper, Gines Martinez Garcia, Valentina Zaccolo, Mario Rodriguez Cahuantzi, Barbara Guerzoni, Paolo Camerini, Domenico Colella, A. J. Rubio-Montero, Lidia Goerlich, Przemyslaw Rokita, Alberto Martín Gago Medina, Marek Kowalski, Otwinowski Jacek, Laurent Aphecetche, Antonio Bianchi, Mikhail Zhalov, DEEPIKA JENA, Cesar Ceballos, Michael Weber, Dr. Sushanta Tripathy, Sabyasachi Siddhanta, Sean Murray, Kenta Shigaki, Ian Bearden, Małgorzata Janik, Md. Rihan Haque, Rahul Ramachandran Nair, Tasnuva Chowdhury, Chiara Oppedisano, Piotr Gasik, Adela Kravcakova, Marcello Borri, Marcello Lunardon, and Francesco Prino

Subjects
Physics, Quark, Large Hadron Collider, Physics and Astronomy (miscellaneous), 010308 nuclear & particles physics, Parton, Multiplicity (mathematics), 01 natural sciences, Particle identification, Nuclear physics, 0103 physical sciences, Quark–gluon plasma, Impact parameter, Nuclear Experiment, 010306 general physics, Engineering (miscellaneous), Sign (mathematics)
Abstract

First results on K/π , p/π and K/p fluctuations are obtained with the ALICE detector at the CERN LHC as a function of centrality in Pb--Pb collisions at √sNN=2.76 TeV . The observable νdyn , which is defined in terms of the moments of particle multiplicity distributions, is used to quantify the magnitude of dynamical fluctuations of relative particle yields and also provides insight into the correlation between particle pairs. This study is based on a novel experimental technique, called the Identity Method, which allows one to measure the moments of multiplicity distributions in case of incomplete particle identification. The results for p/π show a change of sign in νdyn from positive to negative towards more peripheral collisions. For central collisions, the results follow the smooth trend of the data at lower energies and νdyn exhibits a change in sign for p/π and K/p.

Published
2019

25. p−p, p−Λ , and Λ−Λ correlations studied via femtoscopy in pp reactions at s=7TeV

Author

Podist Kurashvili, Lokesh Kumar, Bernhard Hohlweger, Barbara Trzeciak, Marek Bombara, Diego Stocco, Rinaldo Rui, Łukasz Kamil Graczykowski, Yvonne Pachmayer, Oton Vazquez Doce, Toru Sugitate, Subhasis Chattopadhyay, Ivan Kisel, Victor Gonzalez, Janka Vrlakova, Juan Carlos Cabanillas Noris, Zmeskal Johann, Andrea Dubla, Arvind Khuntia, Prabhakar Palni, Yaroslav Berdnikov, Christoph Blume, Jussi Viinikainen, Lee Barnby, Alexandre Suaide, Amalia Pop, Anar Rustamov, Alessandro Feliciello, Dr. Biswarup Paul, Salvatore De Pasquale, Jean Cleymans, Boris Teyssier, Jamila Butt, Ketil Røed, Nikolay Zaviyalov, Fabrizio Grosa, Felix Reidt, Sumit Basu, Mirko Planinic, Jiri A. Mares, James Philip Iddon, Mike Sas, Janusz Oleniacz, Yue Shi Lai, Professor David Evans, Davide Pagano, Salvatore Aiola, Ciprian Mihai MITU, Smbat Grigoryan, Sergey Nikolaev, Manoj Bhanudas Jadhav, Andrew Lowe, Claude Pruneau, Leticia Cunqueiro, Borge S Nielsen, Francesca Carnesecchi, Gergely Gábor Barnaföldi, Ramona Lea, Stefania Beole', Rafael Derradi de Souza, Jeremy Wilkinson, Jens-Jorgen Gaardhoje, Mais Suleymanov, Christoph Mayer, Alexander Akindinov, Andres Gomez Ramirez, Igor Pshenichnov, Marco Toppi, Krzysztof Redlich, Thomas Peitzmann, Leo Greiner, Kristjan Gulbrandsen, Christopher Hills, Christine Nattrass, Elena Botta, Ranjit Nayak, Danilo Silva de Albuquerque, Benedetto Di Ruzza, Francesca Bellini, Vladimir Kovalenko, Debasish Das, Antonio Uras, Domenico Di Bari, LUCINA GABRIELA ESPINOZA BELTRAN, Pranjal Sarma, Mohd Danish Azmi, Johan Alme, Tiziano Virgili, Indranil Das, Jeremi Niedziela, Andrea Festanti, Andreas Mathis, Federico Ronchetti, David Silvermyr, Victor Riabov, Tahir Hussain, Kai Schweda, Petra Loncar, Jan Figiel, Adrian Sevcenco, Przemyslaw Karczmarczyk, Kenneth Read, Ashutosh Kumar Pandey, Francesca Soramel, Piotr Konopka, Thomas Dietel, Timo Hilden, Vladimir Vechernin, Lukas Nellen, Roman Lavicka, Sang Un Ahn, Mattia Faggin, Paula Fernanda Toledo Matuoka, Catia Maria Annunziata Petta, Nikola Poljak, Rutuparna Rath, Ayben Karasu Uysal, Wladyslaw Henryk Trzaska, Jakub Kvapil, Vladyslav Litichevskyi, Syaefudin Jaelani, Matteo Lupi, Raimond Snellings, Markus Keil, Guillaume Batigne, Erwann Masson, Nirbhay Kumar Behera, Rafael Peretti Pezzi, Paul Buehler, Vladimir Zherebchevsky, Andrea Alici, Mikael Mieskolainen, Rashmi Raniwala, Chinorat Kobdaj, Yury Melikyan, Luciano Ramello, Susanna COSTANZA, Arturo Fernandez Tellez, Dhananjaya Thakur, Marielle Chartier, Sergey Fokin, Roy Lemmon, Samrangy Sadhu, Roberto Barbera, Nicolò Jacazio, Tomasz Trzcinski, Sami Räsänen, Daniele De Gruttola, Piero Giubilato, Marie Germain, Christian Bourjau, Sergey Gorbunov, Gianluca Usai, Marco Van Leeuwen, David Chinellato, Giacomo Margagliotti, Somnath Kar, Luca Barioglio, Javier Castillo Castellanos, Federico Cindolo, Enrico Scomparin, Anju Bhasin, Petr Závada, Hector Bello Martinez, Anton Alkin, Elisa Meninno, Gabriele Fiorenza, Friederike Bock, Adam Kisiel, Christopher Anson, Grigory Feofilov, You Zhou, In-Kwon Yoo, Jun Takahashi, Sandra Moretto, Serpil Yalcin Kuzu, Peter Christiansen, Lucas Altenkämper, Gines Martinez Garcia, Valentina Zaccolo, Mario Rodriguez Cahuantzi, Barbara Guerzoni, Paolo Camerini, Domenico Colella, Lidia Goerlich, Alberto Martín Gago Medina, Marek Kowalski, Otwinowski Jacek, Laurent Aphecetche, Antonio Bianchi, Jose Luis Bazo Alba, Mikhail Zhalov, Cesar Ceballos, Michael Weber, Dr. Sushanta Tripathy, Sabyasachi Siddhanta, Sean Murray, Kenta Shigaki, Ian Bearden, Małgorzata Janik, Md. Rihan Haque, Rahul Ramachandran Nair, Miguel Arratia, Tasnuva Chowdhury, Chiara Oppedisano, Piotr Gasik, Adela Kravcakova, Marcello Borri, Marcello Lunardon, and Francesco Prino

Subjects
Physics, Large Hadron Collider, 010308 nuclear & particles physics, Strong interaction, Hyperon, Scattering length, Context (language use), Few-body systems, 01 natural sciences, Baryon, Nuclear physics, Correlation function (statistical mechanics), 0103 physical sciences, High Energy Physics::Experiment, Nuclear Experiment, 010306 general physics
Abstract

We report on the first femtoscopic measurement of baryon pairs, such as p-p, p-Λ, and Λ-Λ, measured by ALICE at the Large Hadron Collider (LHC) in proton-proton collisions at s=7TeV. This study demonstrates the feasibility of such measurements in pp collisions at ultrarelativistic energies. The femtoscopy method is employed to constrain the hyperon-nucleon and hyperon-hyperon interactions, which are still rather poorly understood. A new method to evaluate the influence of residual correlations induced by the decays of resonances and experimental impurities is hereby presented. The p-p, p-Λ, and Λ-Λ correlation functions were fitted simultaneously with the help of a new tool developed specifically for the femtoscopy analysis in small colliding systems: Correlation Analysis Tool using the Schrodinger equation (CATS). Within the assumption that in pp collisions the three particle pairs originate from a common source, its radius is found to be equal to r0=1.125±0.018(stat)−0.035+0.058(syst) fm. The sensitivity of the measured p-Λ correlation is tested against different scattering parameters, which are defined by the interaction among the two particles, but the statistics is not sufficient yet to discriminate among different models. The measurement of the Λ-Λ correlation function constrains the phase space spanned by the effective range and scattering length of the strong interaction. Discrepancies between the measured scattering parameters and the resulting correlation functions at LHC and RHIC energies are discussed in the context of various models.

Published
2019

26. Suppression of Λ(1520) resonance production in central Pb-Pb collisions at sNN=2.76 TeV

Author

Podist Kurashvili, Lokesh Kumar, Bernhard Hohlweger, Barbara Trzeciak, Marek Bombara, Diego Stocco, Rinaldo Rui, Łukasz Kamil Graczykowski, Yvonne Pachmayer, Oton Vazquez Doce, Toru Sugitate, Subhasis Chattopadhyay, Ivan Kisel, Victor Gonzalez, Janka Vrlakova, Juan Carlos Cabanillas Noris, Zmeskal Johann, Andrea Dubla, Arvind Khuntia, Prabhakar Palni, Yaroslav Berdnikov, Christoph Blume, Jussi Viinikainen, Lee Barnby, Alexandre Suaide, Amalia Pop, Anar Rustamov, Alessandro Feliciello, Dr. Biswarup Paul, Salvatore De Pasquale, Jean Cleymans, Boris Teyssier, Jamila Butt, Ketil Røed, Nikolay Zaviyalov, Fabrizio Grosa, Felix Reidt, Sumit Basu, Mirko Planinic, Jiri A. Mares, James Philip Iddon, Mike Sas, Janusz Oleniacz, Yue Shi Lai, Professor David Evans, Davide Pagano, Salvatore Aiola, Ciprian Mihai MITU, Smbat Grigoryan, Sergey Nikolaev, Manoj Bhanudas Jadhav, Andrew Lowe, Claude Pruneau, Leticia Cunqueiro, Borge S Nielsen, Francesca Carnesecchi, Gergely Gábor Barnaföldi, Ramona Lea, Stefania Beole', Rafael Derradi de Souza, Jeremy Wilkinson, Jens-Jorgen Gaardhoje, Mais Suleymanov, Christoph Mayer, Alexander Akindinov, Andres Gomez Ramirez, Igor Pshenichnov, Marco Toppi, Krzysztof Redlich, Thomas Peitzmann, Leo Greiner, Kristjan Gulbrandsen, Christopher Hills, Christine Nattrass, Elena Botta, Ranjit Nayak, Danilo Silva de Albuquerque, Benedetto Di Ruzza, Francesca Bellini, Vladimir Kovalenko, Debasish Das, Antonio Uras, Domenico Di Bari, LUCINA GABRIELA ESPINOZA BELTRAN, Pranjal Sarma, Mohd Danish Azmi, Johan Alme, Tiziano Virgili, Indranil Das, Jeremi Niedziela, Andrea Festanti, Andreas Mathis, Federico Ronchetti, David Silvermyr, Victor Riabov, Tahir Hussain, Kai Schweda, Petra Loncar, Jan Figiel, Adrian Sevcenco, Przemyslaw Karczmarczyk, Kenneth Read, Ashutosh Kumar Pandey, Francesca Soramel, Thomas Dietel, Timo Hilden, Vladimir Vechernin, Lukas Nellen, Roman Lavicka, Sang Un Ahn, Mattia Faggin, Paula Fernanda Toledo Matuoka, Catia Maria Annunziata Petta, Nikola Poljak, Ayben Karasu Uysal, Wladyslaw Henryk Trzaska, Jakub Kvapil, Vladyslav Litichevskyi, Syaefudin Jaelani, Matteo Lupi, Raimond Snellings, Markus Keil, Guillaume Batigne, Erwann Masson, Nirbhay Kumar Behera, Rafael Peretti Pezzi, Paul Buehler, Vladimir Zherebchevsky, Andrea Alici, Mikael Mieskolainen, Rashmi Raniwala, Chinorat Kobdaj, Yury Melikyan, Luciano Ramello, Susanna COSTANZA, Arturo Fernandez Tellez, Dhananjaya Thakur, Marielle Chartier, Sergey Fokin, Roy Lemmon, Samrangy Sadhu, Roberto Barbera, Nicolò Jacazio, Tomasz Trzcinski, Sami Räsänen, Daniele De Gruttola, Piero Giubilato, Marie Germain, Christian Bourjau, Sergey Gorbunov, Gianluca Usai, Marco Van Leeuwen, David Chinellato, Giacomo Margagliotti, Somnath Kar, Luca Barioglio, Javier Castillo Castellanos, Federico Cindolo, Enrico Scomparin, Anju Bhasin, Petr Závada, Hector Bello Martinez, Anton Alkin, Elisa Meninno, Gabriele Fiorenza, Friederike Bock, Adam Kisiel, Christopher Anson, Grigory Feofilov, You Zhou, In-Kwon Yoo, Jun Takahashi, Sandra Moretto, Serpil Yalcin Kuzu, Peter Christiansen, Lucas Altenkämper, Gines Martinez Garcia, Mario Rodriguez Cahuantzi, Barbara Guerzoni, Paolo Camerini, Domenico Colella, Lidia Goerlich, Przemyslaw Rokita, Alberto Martín Gago Medina, Marek Kowalski, Otwinowski Jacek, Laurent Aphecetche, Antonio Bianchi, Jose Luis Bazo Alba, Mikhail Zhalov, Cesar Ceballos, Michael Weber, Dr. Sushanta Tripathy, Sabyasachi Siddhanta, Sean Murray, Kenta Shigaki, Ian Bearden, Małgorzata Janik, Md. Rihan Haque, Rahul Ramachandran Nair, Miguel Arratia, Tasnuva Chowdhury, Chiara Oppedisano, Piotr Gasik, Adela Kravcakova, Marcello Borri, Marcello Lunardon, and Francesco Prino

Subjects
Physics, Large Hadron Collider, 010308 nuclear & particles physics, High Energy Physics::Phenomenology, Hadron, Resonance, 01 natural sciences, Hadronization, Baryon, Nuclear physics, 0103 physical sciences, Quark–gluon plasma, Impact parameter, Nuclear Experiment, 010306 general physics, Event generator
Abstract

The production yield of the Λ(1520) baryon resonance is measured at midrapidity in Pb-Pb collisions at sNN = 2.76 TeV with the ALICE detector at the Large Hadron Collider (LHC). The measurement is performed in the Λ(1520)→pK− (and charge conjugate) hadronic decay channel as a function of the transverse momentum (pT) and collision centrality. The ratio of the pT-integrated production of Λ(1520) baryons relative to Λ baryons in central collisions is suppressed by about a factor of 2 with respect to peripheral collisions. This is the first observation of the suppression of a baryonic resonance at the LHC and the first 3σ evidence of Λ(1520) suppression within a single collision system. The measured Λ(1520)/Λ ratio in central collisions is smaller than the value predicted by the statistical hadronization model calculations. The shape of the measured pT distribution and the centrality dependence of the suppression are reproduced by the EPOS3 Monte Carlo event generator. The measurement adds further support to the formation of a dense hadronic phase in the final stages of the evolution of the fireball created in heavy-ion collisions, lasting long enough to cause a significant reduction in the observable yield of short-lived resonances.

Published
2019

27. Multiplicity dependence of light-flavor hadron production in pp collisions at s=7TeV

Author

Podist Kurashvili, Lokesh Kumar, Bernhard Hohlweger, Barbara Trzeciak, Marek Bombara, Diego Stocco, Rinaldo Rui, Łukasz Kamil Graczykowski, Yvonne Pachmayer, Oton Vazquez Doce, Toru Sugitate, Subhasis Chattopadhyay, Ivan Kisel, Victor Gonzalez, Jana Crkovska, Janka Vrlakova, Juan Carlos Cabanillas Noris, Zmeskal Johann, Andrea Dubla, Arvind Khuntia, Prabhakar Palni, Yaroslav Berdnikov, Christoph Blume, Jussi Viinikainen, Lee Barnby, Alexandre Suaide, Amalia Pop, Anar Rustamov, Alessandro Feliciello, Dr. Biswarup Paul, Salvatore De Pasquale, Jean Cleymans, Boris Teyssier, Jamila Butt, Masanori Ogino, Ketil Røed, Nikolay Zaviyalov, Fabrizio Grosa, Felix Reidt, Sumit Basu, Mirko Planinic, Jiri A. Mares, James Philip Iddon, Mike Sas, Janusz Oleniacz, Yue Shi Lai, Professor David Evans, Davide Pagano, Salvatore Aiola, Ciprian Mihai MITU, Smbat Grigoryan, Sergey Nikolaev, Manoj Bhanudas Jadhav, Claude Pruneau, Leticia Cunqueiro, Borge S Nielsen, Francesca Carnesecchi, Gergely Gábor Barnaföldi, Ramona Lea, Stefania Beole', Rafael Derradi de Souza, Jeremy Wilkinson, Jens-Jorgen Gaardhoje, Mais Suleymanov, Christoph Mayer, Alexander Akindinov, Andres Gomez Ramirez, Igor Pshenichnov, Marco Toppi, Krzysztof Redlich, Thomas Peitzmann, Leo Greiner, Kristjan Gulbrandsen, Christopher Hills, Christine Nattrass, Elena Botta, Ranjit Nayak, Danilo Silva de Albuquerque, Benedetto Di Ruzza, Francesca Bellini, Vladimir Kovalenko, Debasish Das, Antonio Uras, Domenico Di Bari, LUCINA GABRIELA ESPINOZA BELTRAN, Pranjal Sarma, Mohd Danish Azmi, Johan Alme, Tiziano Virgili, Indranil Das, Jeremi Niedziela, Andrea Festanti, Andreas Mathis, Federico Ronchetti, David Silvermyr, Victor Riabov, Antonin MAIRE, Tahir Hussain, Kai Schweda, Petra Loncar, Jan Figiel, Adrian Sevcenco, Przemyslaw Karczmarczyk, Kenneth Read, Francesca Soramel, Piotr Konopka, Thomas Dietel, Timo Hilden, Vladimir Vechernin, Lukas Nellen, Roman Lavicka, Sang Un Ahn, Mattia Faggin, Paula Fernanda Toledo Matuoka, Catia Maria Annunziata Petta, Nikola Poljak, Rutuparna Rath, Ayben Karasu Uysal, Wladyslaw Henryk Trzaska, Jakub Kvapil, Vladyslav Litichevskyi, Syaefudin Jaelani, Matteo Lupi, Raimond Snellings, Markus Keil, Guillaume Batigne, Erwann Masson, Nirbhay Kumar Behera, Rafael Peretti Pezzi, Paul Buehler, Vladimir Zherebchevsky, Andrea Alici, Mikael Mieskolainen, Rashmi Raniwala, Chinorat Kobdaj, Yury Melikyan, Luciano Ramello, Susanna COSTANZA, Arturo Fernandez Tellez, Dhananjaya Thakur, Marielle Chartier, Sergey Fokin, Roy Lemmon, Samrangy Sadhu, Anisa Khatun, Roberto Barbera, Nicolò Jacazio, Tomasz Trzcinski, Sami Räsänen, Daniele De Gruttola, Piero Giubilato, Marie Germain, Christian Bourjau, Sergey Gorbunov, Gianluca Usai, Marco Van Leeuwen, David Chinellato, Giacomo Margagliotti, Somnath Kar, Luca Barioglio, Javier Castillo Castellanos, Federico Cindolo, Enrico Scomparin, Anju Bhasin, Petr Závada, Hector Bello Martinez, Anton Alkin, Elisa Meninno, Gabriele Fiorenza, Friederike Bock, Adam Kisiel, Christopher Anson, Grigory Feofilov, You Zhou, In-Kwon Yoo, Jun Takahashi, Sandra Moretto, Serpil Yalcin Kuzu, Peter Christiansen, Lucas Altenkämper, Gines Martinez Garcia, Valentina Zaccolo, Mario Rodriguez Cahuantzi, Barbara Guerzoni, Paolo Camerini, Domenico Colella, Lidia Goerlich, Alberto Martín Gago Medina, Marek Kowalski, Otwinowski Jacek, Laurent Aphecetche, Antonio Bianchi, Jose Luis Bazo Alba, Mikhail Zhalov, Cesar Ceballos, Michael Weber, Dr. Sushanta Tripathy, Sabyasachi Siddhanta, Sean Murray, Kenta Shigaki, Ian Bearden, Małgorzata Janik, Md. Rihan Haque, Rahul Ramachandran Nair, Miguel Arratia, Tasnuva Chowdhury, Chiara Oppedisano, Piotr Gasik, Adela Kravcakova, Marcello Borri, Marcello Lunardon, and Francesco Prino

Subjects
Physics, 010308 nuclear & particles physics, Nuclear Theory, Hadron, Inelastic collision, Strangeness, 01 natural sciences, Charged particle, Nuclear physics, Pion, 0103 physical sciences, Quark–gluon plasma, Rapidity, Multiplicity (chemistry), Nuclear Experiment, 010306 general physics
Abstract

Comprehensive results on the production of unidentified charged particles, π±, K±, KS0, K* (892)0, p, p¯, ϕ(1020), Λ, Λ¯, Ξ−, Ξ¯+, Ω−, and Ω¯+ hadrons in proton-proton (pp) collisions at s=7 TeV at midrapidity (|y

Published
2019

28. Wide-acceptance measurement of the K−/K+ ratio from Ni+Ni collisions at 1.91A GeV

Author

Mile Dželalija, M. Korolija, A. Lebedev, Xavier Bernard Lopez, P. Koczon, Ivana Weber, A. Mangiarotti, Ralf Peter Averbeck, M. Merschmeyer, M. Kirejczyk, Anton Andronic, Johann Marton, Valerie Ramillien Barret, K. Wiśniewski, R. Kotte, Pascal Dupieux, A. Reischl, N. Herrmann, K. D. Hildenbrand, Laura Fabbietti, R. H. Munzer, Nicole Bastid, D. Pelte, H. S. Xu, I. E. Yushmanov, V. Simion, A. Le Fèvre, I. M. Deppner, Y. Leifels, Mladen Kiš, K. Suzuki, Jianli Liu, T. I. Kang, M. Berger, W. Reisdorf, Peter Wagner, Piotr Jan Gasik, Paul Buehler, T. Matulewicz, Z. Fodor, Vladislav Manko, Krzysztof Piasecki, Z. Seres, E. Widmann, K. Siwek-Wilczyńska, Mihai Petrovici, Igor Gašparić, O. Czerwiakowa, P. Crochet, Z. Basrak, Fouad Rami, P. Schmidt, J. Kecskemeti, K. S. Sim, A. Zhilin, B. Sikora, Roman Čaplar, Y. Grishkin, Johann Zmeskal, O. N. Hartmann, Byung-Sik Hong, V. Zinyuk, Zhigang Xiao, Michael Cargnelli, Yongsun Kim, M. L. Benabderrahmane, V. T. Smolyankin, M. S. Ryu, A. Schüttauf, Y. H. Zhang, E. Cordier, Gabriel Stoicea, and Z. Tyminski

Subjects
Physics, Meson, 010308 nuclear & particles physics, Plane (geometry), Nuclear Theory, Kinetic energy, 7. Clean energy, 01 natural sciences, Synchrotron, Spectral line, law.invention, Nuclear physics, Distribution (mathematics), law, Yield (chemistry), 0103 physical sciences, High Energy Physics::Experiment, Polar coordinate system, Nuclear Experiment, 010306 general physics
Abstract

The FOPI Collaboration at the GSI SIS-18 synchrotron measured charged kaons from central and semicentral collisions of Ni+Ni at a beam energy of 1.91A GeV. We present the distribution of the K−/K+ ratio on the energy vs polar angle plane in the nucleon-nucleon center-of-mass frame, with and without subtraction of the contribution of ϕ(1020) meson decays to the K− yield. The acceptance of the current experiment is substantially wider compared to the previous measurement of the same colliding system. The ratio of K− to K+ energy spectra is expected to be sensitive to the in-medium modifications of basic kaon properties like mass. Recent results obtained by the HADES Collaboration at 1.23A and 1.76A GeV indicate that after inclusion of the ϕ meson decay contribution to the K− production no difference between the slopes of the K− and K+ energy spectra is observed within uncertainties. For our data a linear fit to this ratio obtained after subtraction of the ϕ meson contribution still shows a decrease with kinetic energy, although a constant value cannot be rejected. The contribution of Λ(1520)→pK− decays estimated from fitting the thermal model to the experimental yields appears to be another factor of moderate relevance.

Published
2019

29. Spectroscopic study of the Λ(1405) resonance via the d(K−, n) reaction at J-PARC

Author

H. Tatsuno, S. Aikawa, D. Tomono, K. Itahashi, S. Kawasaki, K. Piscicchia, Florin Sirghi, Makoto Tokuda, H. Asano, Michael Cargnelli, L. Busso, Alessandro Scordo, T. Hashimoto, Atsushi Sakaguchi, Yasuhiro H. Matsuda, J. Marton, Paul Buehler, K. Kato, H. Yim, Hexi Shi, Shinji Okada, Toshihiko Hiraiwa, Hiroyuki Fujioka, T. Ishikawa, Y. Sada, O. Vazquez Doce, T. Suzuki, Johann Zmeskal, T. Yamazaki, G. A. Beer, D. Sirghi, Paul Kienle, A. O. Tokiyasu, Yue Ma, M. Sekimoto, Tomofumi Nagae, S. Y. Suzuki, Shigeru Ishimoto, Shun Enomoto, Y. Ishiguro, C. Guaraldo, Koki Kanno, Fuminori Sakuma, O. Morra, Ken Suzuki, Y. Kato, H. Kou, E. Widmann, K. Tsukada, T. Akaishi, M. Sato, K. Inoue, H. Outa, M. Iliescu, Hiroyuki Noumi, M. Iwai, Z. Omar, Ryugo S. Hayano, Y. Komatsu, Kotaro Shirotori, Q. Zhang, M. Iwasaki, S. Choi, T. Yamaga, Kiyoshi Tanida, M. Bragadireanu, Tomokazu Fukuda, Y. Fujiwara, Catalina Curceanu, Yutaka Mizoi, Akihiro Toyoda, S. Ajimura, Masami Iio, Hiroaki Ohnishi, and Carolina Berucci

Subjects
Nuclear physics, Momentum, Physics, Deuterium, Scattering, Isospin, Spectrum (functional analysis), Hyperon, J-PARC, Resonance (particle physics)
Abstract

The structure of the Λ(1405) hyperon is an important and long-standing issue related to the K-nucleus interaction. The J-PARC E31 experiment has been performed to investigate the Λ(1405) spectrum shape. Because it is hard to form the Λ(1405) directly by a KN scattering in free space, E31 uses the d(K-, n) reaction with an incident kaon momentum of 1 GeV/c. We will identify three final states - ς-π+, ς+π-, ς0π0-so that the isospin structure of hyperon resonance states produced can be decomposed. The first physics run of the E31 experiment was performed in 2016. To enhance the statistics of the data set, we have performed the second physics run in the beginning of 2018. During the second run of E31, around 3.9×1010 kaons impacted on the deuteron target.

Published
2019

30. Neutral pion and $$\eta $$ η meson production in p–Pb collisions at $$\sqrt{s_{\mathrm{NN}}}$$ s NN = 5.02 TeV

Author

Christian Klein-Boesing, Podist Kurashvili, Bernhard Hohlweger, Barbara Trzeciak, Marek Bombara, Diego Stocco, Rinaldo Rui, Łukasz Kamil Graczykowski, Yvonne Pachmayer, Oton Vazquez Doce, Toru Sugitate, Ivan Kisel, Leonid Vinogradov, Janka Vrlakova, Juan Carlos Cabanillas Noris, Zmeskal Johann, Andrea Dubla, Arvind Khuntia, Prabhakar Palni, Jihyun Bhom, Yaroslav Berdnikov, Christoph Blume, Jussi Viinikainen, Lee Barnby, Alexandre Suaide, Amalia Pop, Anar Rustamov, Alexey Kurepin, Pasquale Di Nezza, Alessandro Feliciello, Dr. Biswarup Paul, Salvatore De Pasquale, Jamila Butt, Ketil Røed, Nikolay Zaviyalov, Fabrizio Grosa, Felix Reidt, Sumit Basu, Mirko Planinic, Jiri A. Mares, James Philip Iddon, Mike Sas, Janusz Oleniacz, Yue Shi Lai, Professor David Evans, Davide Pagano, Salvatore Aiola, Ciprian Mihai MITU, Smbat Grigoryan, Sergey Nikolaev, Manoj Bhanudas Jadhav, Andrew Lowe, Claude Pruneau, Leticia Cunqueiro, Borge S Nielsen, Francesca Carnesecchi, Gergely Gábor Barnaföldi, Ramona Lea, Lilit Karayan, Stefania Beole', Rafael Derradi de Souza, Valery Kondratiev, Fedor Guber, Jeremy Wilkinson, Jens-Jorgen Gaardhoje, Mais Suleymanov, Christoph Mayer, Alexander Akindinov, Andres Gomez Ramirez, Igor Pshenichnov, Marco Toppi, Krzysztof Redlich, Thomas Peitzmann, Leo Greiner, Kristjan Gulbrandsen, Christopher Hills, Christine Nattrass, Elena Botta, Ranjit Nayak, Danilo Silva de Albuquerque, Benedetto Di Ruzza, Francesca Bellini, Vladimir Kovalenko, Debasish Das, Yuri Kharlov, Antonio Uras, Domenico Di Bari, LUCINA GABRIELA ESPINOZA BELTRAN, Pranjal Sarma, Mohd Danish Azmi, Johan Alme, Tiziano Virgili, Indranil Das, Andrzej Rybicki, Jeremi Niedziela, Andrea Festanti, Andreas Mathis, Federico Ronchetti, David Silvermyr, Svetlana Ingerman, Victor Riabov, Tahir Hussain, Kai Schweda, Petra Loncar, Jan Figiel, Adrian Sevcenco, Przemyslaw Karczmarczyk, Kenneth Read, Ewa Gładysz-Dziaduś, Ashutosh Kumar Pandey, Francesca Soramel, Thomas Dietel, Vladimir Vechernin, Lukas Nellen, Roman Lavicka, Sang Un Ahn, Mattia Faggin, Paula Fernanda Toledo Matuoka, Catia Maria Annunziata Petta, Nikola Poljak, Ayben Karasu Uysal, Wladyslaw Henryk Trzaska, Vladyslav Litichevskyi, Syaefudin Jaelani, Matteo Lupi, Raimond Snellings, Markus Keil, Guillaume Batigne, Erwann Masson, Nirbhay Kumar Behera, Rafael Peretti Pezzi, Paul Buehler, Andrea Alici, Mikael Mieskolainen, Rashmi Raniwala, Chinorat Kobdaj, Yury Melikyan, Luciano Ramello, Susanna COSTANZA, Arturo Fernandez Tellez, Dhananjaya Thakur, Marielle Chartier, Sergey Fokin, Roy Lemmon, Samrangy Sadhu, Anisa Khatun, Roberto Barbera, Nicolò Jacazio, Tomasz Trzcinski, Sami Räsänen, Daniele De Gruttola, Piero Giubilato, Marie Germain, Christian Bourjau, Sergey Gorbunov, Gianluca Usai, Marco Van Leeuwen, David Chinellato, Giacomo Margagliotti, Somnath Kar, Luca Barioglio, Javier Castillo Castellanos, Federico Cindolo, Enrico Scomparin, Anju Bhasin, Petr Závada, Elisa Meninno, Friederike Bock, Adam Kisiel, Christopher Anson, Grigory Feofilov, You Zhou, In-Kwon Yoo, Jun Takahashi, Sandra Moretto, Serpil Yalcin Kuzu, Tomas Vanat, Peter Christiansen, Lucas Altenkämper, Gines Martinez Garcia, Valentina Zaccolo, Mario Rodriguez Cahuantzi, Barbara Guerzoni, Paolo Camerini, Domenico Colella, Lidia Goerlich, Przemyslaw Rokita, Alberto Martín Gago Medina, Marek Kowalski, Otwinowski Jacek, Laurent Aphecetche, Antonio Bianchi, Jose Luis Bazo Alba, Mikhail Zhalov, DEEPIKA JENA, Cesar Ceballos, Michael Weber, Dr. Sushanta Tripathy, Sabyasachi Siddhanta, Sean Murray, Kenta Shigaki, Ian Bearden, Małgorzata Janik, Md. Rihan Haque, Rahul Ramachandran Nair, Miguel Arratia, Tasnuva Chowdhury, Chiara Oppedisano, Piotr Gasik, Adela Kravcakova, Marcello Borri, Marcello Lunardon, and Francesco Prino

Subjects
Quantum chromodynamics, Physics, Particle physics, Meson production, Photon, Physics and Astronomy (miscellaneous), Meson, 010308 nuclear & particles physics, Parton, 01 natural sciences, 7. Clean energy, Spectral line, Pion, 0103 physical sciences, Transverse momentum, High Energy Physics::Experiment, Nuclear Experiment, 010306 general physics, Engineering (miscellaneous)
Abstract

Neutral pion and $\eta $ meson invariant differential yields were measured in non-single diffractive p–Pb collisions at $\sqrt{s_{\mathrm{NN}}}$ = 5.02 TeV with the ALICE experiment at the CERN LHC. The analysis combines results from three complementary photon measurements, utilizing the PHOS and EMCal calorimeters and the Photon Conversion Method. The invariant differential yields of $\pi ^{0}$ and $\eta $ meson inclusive production are measured near mid-rapidity in a broad transverse momentum range of $0.3 4 $\hbox {GeV}/c$ at $0.483 \pm 0.015_{\mathrm{stat}} \pm 0.015_{\mathrm{sys}}$ . A deviation from $m_{\mathrm{T}}$ scaling is observed for $p_{\mathrm{T}}

Published
2018

31. Measurement of the inclusive J/ $$\psi $$ ψ polarization at forward rapidity in pp collisions at $$\mathbf {\sqrt{s} = 8}$$ s = 8 TeV

Author

Christian Klein-Boesing, Podist Kurashvili, Lokesh Kumar, Bernhard Hohlweger, Barbara Trzeciak, Marek Bombara, Diego Stocco, Rinaldo Rui, Łukasz Kamil Graczykowski, Yvonne Pachmayer, Oton Vazquez Doce, Toru Sugitate, Subhasis Chattopadhyay, Ivan Kisel, Victor Gonzalez, Janka Vrlakova, Juan Carlos Cabanillas Noris, Zmeskal Johann, Andrea Dubla, Arvind Khuntia, Prabhakar Palni, Jihyun Bhom, Yaroslav Berdnikov, Christoph Blume, Jussi Viinikainen, Lee Barnby, Alexandre Suaide, Amalia Pop, Anar Rustamov, Alexey Kurepin, Alessandro Feliciello, Dr. Biswarup Paul, Salvatore De Pasquale, Boris Teyssier, Jamila Butt, Ketil Røed, Nikolay Zaviyalov, Fabrizio Grosa, Felix Reidt, Sumit Basu, Mirko Planinic, Jiri A. Mares, James Philip Iddon, Mike Sas, Janusz Oleniacz, Yue Shi Lai, Professor David Evans, Davide Pagano, Salvatore Aiola, Ciprian Mihai MITU, Smbat Grigoryan, Sergey Nikolaev, Manoj Bhanudas Jadhav, Andrew Lowe, Claude Pruneau, Leticia Cunqueiro, Borge S Nielsen, Francesca Carnesecchi, Gergely Gábor Barnaföldi, Ramona Lea, Stefania Beole', Rafael Derradi de Souza, Maximiliano Puccio, Jeremy Wilkinson, Jens-Jorgen Gaardhoje, Mais Suleymanov, Christoph Mayer, Alexander Akindinov, Andres Gomez Ramirez, Igor Pshenichnov, Marco Toppi, Krzysztof Redlich, Thomas Peitzmann, Leo Greiner, Kristjan Gulbrandsen, Christopher Hills, Christine Nattrass, Elena Botta, Ranjit Nayak, Danilo Silva de Albuquerque, Benedetto Di Ruzza, Francesca Bellini, Vladimir Kovalenko, Debasish Das, Yuri Kharlov, Antonio Uras, Domenico Di Bari, LUCINA GABRIELA ESPINOZA BELTRAN, Pranjal Sarma, Mohd Danish Azmi, Johan Alme, Tiziano Virgili, Indranil Das, Andrzej Rybicki, Jeremi Niedziela, Andrea Festanti, Andreas Mathis, Federico Ronchetti, David Silvermyr, Victor Riabov, Tahir Hussain, Kai Schweda, Petra Loncar, Jan Figiel, Adrian Sevcenco, Przemyslaw Karczmarczyk, Kenneth Read, Ashutosh Kumar Pandey, Francesca Soramel, Thomas Dietel, Timo Hilden, Vladimir Vechernin, Lukas Nellen, Roman Lavicka, Sang Un Ahn, Mattia Faggin, Paula Fernanda Toledo Matuoka, Catia Maria Annunziata Petta, Nikola Poljak, Ayben Karasu Uysal, Wladyslaw Henryk Trzaska, Vladyslav Litichevskyi, Syaefudin Jaelani, Matteo Lupi, Raimond Snellings, Markus Keil, Guillaume Batigne, Erwann Masson, Nirbhay Kumar Behera, Rafael Peretti Pezzi, Paul Buehler, Vladimir Zherebchevsky, Andrea Alici, Mikael Mieskolainen, Rashmi Raniwala, Chinorat Kobdaj, Yury Melikyan, Luciano Ramello, Susanna COSTANZA, Arturo Fernandez Tellez, Dhananjaya Thakur, Marielle Chartier, Sergey Fokin, Roy Lemmon, Samrangy Sadhu, Roberto Barbera, Nicolò Jacazio, Tomasz Trzcinski, Sami Räsänen, Daniele De Gruttola, Piero Giubilato, Marie Germain, Christian Bourjau, Sergey Gorbunov, Gianluca Usai, Marco Van Leeuwen, David Chinellato, Giacomo Margagliotti, Somnath Kar, Luca Barioglio, Javier Castillo Castellanos, Federico Cindolo, Enrico Scomparin, Anju Bhasin, Petr Závada, Hector Bello Martinez, Anton Alkin, Elisa Meninno, Gabriele Fiorenza, Friederike Bock, Adam Kisiel, Christopher Anson, Grigory Feofilov, You Zhou, In-Kwon Yoo, Jun Takahashi, Sandra Moretto, Serpil Yalcin Kuzu, Peter Christiansen, Lucas Altenkämper, Gines Martinez Garcia, Valentina Zaccolo, Mario Rodriguez Cahuantzi, Barbara Guerzoni, Paolo Camerini, Domenico Colella, Lidia Goerlich, Massimo Masera, Alberto Martín Gago Medina, Marek Kowalski, Otwinowski Jacek, Laurent Aphecetche, Antonio Bianchi, Jose Luis Bazo Alba, Mikhail Zhalov, Cesar Ceballos, Michael Weber, Dr. Sushanta Tripathy, Sabyasachi Siddhanta, Sean Murray, Kenta Shigaki, Ian Bearden, Małgorzata Janik, Md. Rihan Haque, Rahul Ramachandran Nair, Miguel Arratia, Tasnuva Chowdhury, Chiara Oppedisano, Piotr Gasik, Adela Kravcakova, Marcello Borri, Marcello Lunardon, and Francesco Prino

Subjects
Quantum chromodynamics, Physics, Particle physics, Large Hadron Collider, Physics and Astronomy (miscellaneous), 010308 nuclear & particles physics, Quarkonium, Polarization (waves), Lambda, 01 natural sciences, Helicity, 0103 physical sciences, High Energy Physics::Experiment, Rapidity, Nuclear Experiment, 010306 general physics, Engineering (miscellaneous)
Abstract

We report on the measurement of the inclusive J/ $\psi $ polarization parameters in pp collisions at a center of mass energy $\sqrt{s} = 8$ TeV with the ALICE detector at the LHC. The analysis is based on a data sample corresponding to an integrated luminosity of 1.23 pb$^{-1}$ . J/ $\psi $ resonances are reconstructed in their di-muon decay channel in the rapidity interval $2.5< y < 4.0$ and over the transverse-momentum interval $2< p_\mathrm{T} < 15$ $\mathrm {GeV}/c$ . The three polarization parameters ( $\lambda _\theta $ , $\lambda _\varphi $ , $\lambda _{\theta \varphi }$ ) are measured as a function of $p_\mathrm{T}$ both in the helicity and Collins-Soper reference frames. The measured J/ $\psi $ polarization parameters are found to be compatible with zero within uncertainties, contrary to expectations from all available predictions. The results are compared with the measurement in pp collisions at $\sqrt{s} = 7$ TeV.

Published
2018

32. $$\phi $$ ϕ meson production at forward rapidity in Pb–Pb collisions at $$\sqrt{s_\mathrm {NN}}=2.76$$ s NN = 2.76 TeV

Author

Christian Klein-Boesing, Podist Kurashvili, Bernhard Hohlweger, Barbara Trzeciak, Marek Bombara, Diego Stocco, Rinaldo Rui, Łukasz Kamil Graczykowski, Yvonne Pachmayer, Oton Vazquez Doce, Toru Sugitate, Subhasis Chattopadhyay, Ivan Kisel, Leonid Vinogradov, Janka Vrlakova, Juan Carlos Cabanillas Noris, Zmeskal Johann, Andrea Dubla, Arvind Khuntia, Prabhakar Palni, Jihyun Bhom, Yaroslav Berdnikov, Christoph Blume, Jussi Viinikainen, Lee Barnby, Alexandre Suaide, Amalia Pop, Anar Rustamov, Alexey Kurepin, Pasquale Di Nezza, Alessandro Feliciello, Dr. Biswarup Paul, Salvatore De Pasquale, Jamila Butt, Ketil Røed, Nikolay Zaviyalov, Fabrizio Grosa, Felix Reidt, Sumit Basu, Mirko Planinic, Jiri A. Mares, James Philip Iddon, Mike Sas, Janusz Oleniacz, Yue Shi Lai, Davide Pagano, Salvatore Aiola, Ciprian Mihai MITU, Smbat Grigoryan, Sergey Nikolaev, Manoj Bhanudas Jadhav, Andrew Lowe, Claude Pruneau, Leticia Cunqueiro, Borge S Nielsen, Francesca Carnesecchi, Gergely Gábor Barnaföldi, Ramona Lea, Lilit Karayan, Stefania Beole', Rafael Derradi de Souza, Valery Kondratiev, Fedor Guber, Maximiliano Puccio, Jeremy Wilkinson, Jens-Jorgen Gaardhoje, Mais Suleymanov, Christoph Mayer, Alexander Akindinov, Andres Gomez Ramirez, Igor Pshenichnov, Marco Toppi, Krzysztof Redlich, Thomas Peitzmann, Leo Greiner, Kristjan Gulbrandsen, Christopher Hills, Christine Nattrass, Elena Botta, Ranjit Nayak, Danilo Silva de Albuquerque, Benedetto Di Ruzza, Francesca Bellini, Vladimir Kovalenko, Debasish Das, Yuri Kharlov, Antonio Uras, Domenico Di Bari, LUCINA GABRIELA ESPINOZA BELTRAN, Pranjal Sarma, Mohd Danish Azmi, Johan Alme, Tiziano Virgili, Indranil Das, Andrzej Rybicki, Jeremi Niedziela, Andrea Festanti, Andreas Mathis, Federico Ronchetti, David Silvermyr, Svetlana Ingerman, Victor Riabov, Tahir Hussain, Kai Schweda, Petra Loncar, Jan Figiel, Adrian Sevcenco, Przemyslaw Karczmarczyk, Kenneth Read, Ewa Gładysz-Dziaduś, Ashutosh Kumar Pandey, Francesca Soramel, Thomas Dietel, Vladimir Vechernin, Lukas Nellen, Roman Lavicka, Mattia Faggin, Paula Fernanda Toledo Matuoka, Catia Maria Annunziata Petta, Nikola Poljak, Ayben Karasu Uysal, Wladyslaw Henryk Trzaska, Vladyslav Litichevskyi, Syaefudin Jaelani, Matteo Lupi, Raimond Snellings, Markus Keil, Guillaume Batigne, Erwann Masson, Nirbhay Kumar Behera, Rafael Peretti Pezzi, Paul Buehler, Andrea Alici, Mikael Mieskolainen, Rashmi Raniwala, Chinorat Kobdaj, Yury Melikyan, Luciano Ramello, Susanna COSTANZA, Arturo Fernandez Tellez, Dhananjaya Thakur, Marielle Chartier, Sergey Fokin, Roy Lemmon, Samrangy Sadhu, Roberto Barbera, Nicolò Jacazio, Tomasz Trzcinski, Sami Räsänen, Daniele De Gruttola, Piero Giubilato, Marie Germain, Christian Bourjau, Sergey Gorbunov, Gianluca Usai, Marco Van Leeuwen, David Chinellato, Giacomo Margagliotti, Somnath Kar, Luca Barioglio, Javier Castillo Castellanos, Federico Cindolo, Enrico Scomparin, Anju Bhasin, Petr Závada, Elisa Meninno, Friederike Bock, Adam Kisiel, Grigory Feofilov, You Zhou, In-Kwon Yoo, Jun Takahashi, Sandra Moretto, Serpil Yalcin Kuzu, Tomas Vanat, Peter Christiansen, Lucas Altenkämper, Gines Martinez Garcia, Valentina Zaccolo, Mario Rodriguez Cahuantzi, Barbara Guerzoni, Paolo Camerini, Domenico Colella, Lidia Goerlich, Massimo Masera, Alberto Martín Gago Medina, Marek Kowalski, Otwinowski Jacek, Antonio Bianchi, Jose Luis Bazo Alba, Mikhail Zhalov, DEEPIKA JENA, Michael Weber, Dr. Sushanta Tripathy, Sabyasachi Siddhanta, Sean Murray, Kenta Shigaki, Ian Bearden, Małgorzata Janik, Md. Rihan Haque, Rahul Ramachandran Nair, Miguel Arratia, Tasnuva Chowdhury, Chiara Oppedisano, Adela Kravcakova, Marcello Borri, Marcello Lunardon, and Francesco Prino

Subjects
Quantum chromodynamics, Physics, Particle physics, Muon, Physics and Astronomy (miscellaneous), Meson, 010308 nuclear & particles physics, Nuclear Theory, Strangeness production, 7. Clean energy, 01 natural sciences, 0103 physical sciences, Quark–gluon plasma, High Energy Physics::Experiment, Production (computer science), Rapidity, Nuclear Experiment, 010306 general physics, Nucleon, Engineering (miscellaneous)
Abstract

$\phi $ meson measurements provide insight into strangeness production, which is one of the key observables for the hot medium formed in high-energy heavy-ion collisions. ALICE measured $\phi $ production through its decay in muon pairs in Pb–Pb collisions at $\sqrt{s_\mathrm {NN}} = 2.76$ TeV in the intermediate transverse momentum range $2< p_\mathrm {T}< 5$ GeV/c and in the rapidity interval $2.5

Published
2018

33. Prompt and non-prompt $$\hbox {J}/\psi $$ J / ψ production and nuclear modification at mid-rapidity in p–Pb collisions at $$\mathbf{\sqrt{{ s}_{\text {NN}}}= 5.02}$$ s NN = 5.02 TeV

Author

Christian Klein-Boesing, Podist Kurashvili, Bernhard Hohlweger, Barbara Trzeciak, Marek Bombara, Diego Stocco, Rinaldo Rui, Łukasz Kamil Graczykowski, Yvonne Pachmayer, Oton Vazquez Doce, Toru Sugitate, Ivan Kisel, Leonid Vinogradov, Janka Vrlakova, Juan Carlos Cabanillas Noris, Zmeskal Johann, Andrea Dubla, Arvind Khuntia, Prabhakar Palni, Jihyun Bhom, Yaroslav Berdnikov, Christoph Blume, Jussi Viinikainen, Lee Barnby, Alexandre Suaide, Amalia Pop, Anar Rustamov, Alexey Kurepin, Alessandro Feliciello, Dr. Biswarup Paul, Salvatore De Pasquale, Jamila Butt, Ketil Røed, Nikolay Zaviyalov, Fabrizio Grosa, Felix Reidt, Sumit Basu, Mirko Planinic, Jiri A. Mares, James Philip Iddon, Mike Sas, Janusz Oleniacz, Yue Shi Lai, Professor David Evans, Davide Pagano, Salvatore Aiola, Ciprian Mihai MITU, Smbat Grigoryan, Sergey Nikolaev, Manoj Bhanudas Jadhav, Andrew Lowe, Claude Pruneau, Leticia Cunqueiro, Borge S Nielsen, Francesca Carnesecchi, Gergely Gábor Barnaföldi, Ramona Lea, Lilit Karayan, Stefania Beole', Rafael Derradi de Souza, Valery Kondratiev, Maximiliano Puccio, Jeremy Wilkinson, Jens-Jorgen Gaardhoje, Mais Suleymanov, Christoph Mayer, Alexander Akindinov, Andres Gomez Ramirez, Igor Pshenichnov, Marco Toppi, Krzysztof Redlich, Thomas Peitzmann, Leo Greiner, Kristjan Gulbrandsen, Christopher Hills, Christine Nattrass, Elena Botta, Ranjit Nayak, Danilo Silva de Albuquerque, Benedetto Di Ruzza, Francesca Bellini, Vladimir Kovalenko, Debasish Das, Yuri Kharlov, Antonio Uras, Domenico Di Bari, LUCINA GABRIELA ESPINOZA BELTRAN, Pranjal Sarma, Mohd Danish Azmi, Johan Alme, Tiziano Virgili, Indranil Das, Andrzej Rybicki, Jeremi Niedziela, Andrea Festanti, Andreas Mathis, Federico Ronchetti, David Silvermyr, Svetlana Ingerman, Victor Riabov, Tahir Hussain, Kai Schweda, Petra Loncar, Jan Figiel, Adrian Sevcenco, Przemyslaw Karczmarczyk, Kenneth Read, Ashutosh Kumar Pandey, Francesca Soramel, Thomas Dietel, Vladimir Vechernin, Lukas Nellen, Roman Lavicka, Sang Un Ahn, Mattia Faggin, Paula Fernanda Toledo Matuoka, Catia Maria Annunziata Petta, Nikola Poljak, Ayben Karasu Uysal, Wladyslaw Henryk Trzaska, Vladyslav Litichevskyi, Syaefudin Jaelani, Matteo Lupi, Raimond Snellings, Markus Keil, Guillaume Batigne, Erwann Masson, Nirbhay Kumar Behera, Rafael Peretti Pezzi, Paul Buehler, Andrea Alici, Mikael Mieskolainen, Rashmi Raniwala, Chinorat Kobdaj, Yury Melikyan, Luciano Ramello, Susanna COSTANZA, Arturo Fernandez Tellez, Dhananjaya Thakur, Marielle Chartier, Sergey Fokin, Roy Lemmon, Samrangy Sadhu, Roberto Barbera, Nicolò Jacazio, Tomasz Trzcinski, Sami Räsänen, Daniele De Gruttola, Piero Giubilato, Marie Germain, Christian Bourjau, Sergey Gorbunov, Gianluca Usai, Marco Van Leeuwen, David Chinellato, Giacomo Margagliotti, Somnath Kar, Luca Barioglio, Javier Castillo Castellanos, Federico Cindolo, Enrico Scomparin, Anju Bhasin, Mirosław Kiełbowicz, Petr Závada, Friederike Bock, Adam Kisiel, Christopher Anson, Grigory Feofilov, You Zhou, In-Kwon Yoo, Jun Takahashi, Sandra Moretto, Serpil Yalcin Kuzu, Tomas Vanat, Peter Christiansen, Lucas Altenkämper, Gines Martinez Garcia, Valentina Zaccolo, Mario Rodriguez Cahuantzi, Barbara Guerzoni, Paolo Camerini, Domenico Colella, Lidia Goerlich, Przemyslaw Rokita, Alberto Martín Gago Medina, Marek Kowalski, Otwinowski Jacek, Laurent Aphecetche, Antonio Bianchi, Jose Luis Bazo Alba, Mikhail Zhalov, DEEPIKA JENA, Michael Weber, Dr. Sushanta Tripathy, Sabyasachi Siddhanta, Sean Murray, Kenta Shigaki, Ian Bearden, Małgorzata Janik, Md. Rihan Haque, Rahul Ramachandran Nair, Miguel Arratia, Tasnuva Chowdhury, Chiara Oppedisano, Piotr Gasik, Adela Kravcakova, Marcello Borri, Marcello Lunardon, and Francesco Prino

Subjects
Quark, Physics, Mathematics::Functional Analysis, Particle physics, Physics and Astronomy (miscellaneous), Meson, Proton, 010308 nuclear & particles physics, Nuclear Theory, Hadron, Mathematics::Analysis of PDEs, Quarkonium, 01 natural sciences, 0103 physical sciences, High Energy Physics::Experiment, Production (computer science), Rapidity, Nuclear Experiment, 010306 general physics, Engineering (miscellaneous), Energy (signal processing)
Abstract

A measurement of beauty hadron production at mid-rapidity in proton-lead collisions at a nucleon–nucleon centre-of-mass energy $\sqrt{s_\text {NN}}=5.02$ TeV is presented. The semi-inclusive decay channel of beauty hadrons into $\hbox {J}/\psi $ is considered, where the $\hbox {J}/\psi $ mesons are reconstructed in the dielectron decay channel at mid-rapidity down to transverse momenta of 1.3 GeV/c. The $\hbox {b}\bar{\hbox {b}}$ production cross section at mid-rapidity, $\hbox {d}\sigma _{\hbox {b}\bar{\hbox {b}}}/\hbox {d}y$ , and the total cross section extrapolated over full phase space, $\sigma _{\text {b}\bar{\text {b}}}$ , are obtained. This measurement is combined with results on inclusive $\hbox {J}/\psi $ production to determine the prompt $\hbox {J}/\psi $ cross sections. The results in p–Pb collisions are then scaled to expectations from pp collisions at the same centre-of-mass energy to derive the nuclear modification factor $R_{\text {pPb}}$ , and compared to models to study possible nuclear modifications of the production induced by cold nuclear matter effects. $R_{\text {pPb}}$ is found to be smaller than unity at low $p_{\mathrm{T}}$ for both $\hbox {J}/\psi $ coming from beauty hadron decays and prompt $\hbox {J}/\psi $ .

Published
2018

34. Λ+c production in pp collisions at $$ \sqrt{s}=7 $$ TeV and in p-Pb collisions at $$ \sqrt{s_{\mathrm{NN}}}=5.02 $$ TeV

Author

Christian Klein-Boesing, Podist Kurashvili, Bernhard Hohlweger, Barbara Trzeciak, Marek Bombara, Diego Stocco, Rinaldo Rui, Łukasz Kamil Graczykowski, Yvonne Pachmayer, Oton Vazquez Doce, Toru Sugitate, Subhasis Chattopadhyay, Ivan Kisel, Leonid Vinogradov, Janka Vrlakova, Juan Carlos Cabanillas Noris, Zmeskal Johann, Andrea Dubla, Arvind Khuntia, Prabhakar Palni, Jihyun Bhom, Yaroslav Berdnikov, Christoph Blume, Jussi Viinikainen, Lee Barnby, Alexandre Suaide, Amalia Pop, Anar Rustamov, Alexey Kurepin, Pasquale Di Nezza, Alessandro Feliciello, Dr. Biswarup Paul, Salvatore De Pasquale, Ketil Røed, Nikolay Zaviyalov, Fabrizio Grosa, Felix Reidt, Sumit Basu, Mirko Planinic, Jiri A. Mares, James Philip Iddon, Mike Sas, Janusz Oleniacz, Yue Shi Lai, Professor David Evans, Davide Pagano, Salvatore Aiola, Ciprian Mihai MITU, Smbat Grigoryan, Sergey Nikolaev, Manoj Bhanudas Jadhav, Andrew Lowe, Claude Pruneau, Leticia Cunqueiro, Borge S Nielsen, Francesca Carnesecchi, Gergely Gábor Barnaföldi, Ramona Lea, Lilit Karayan, Rafael Derradi de Souza, Valery Kondratiev, Fedor Guber, Maximiliano Puccio, Jeremy Wilkinson, Jens-Jorgen Gaardhoje, Mais Suleymanov, Christoph Mayer, Alexander Akindinov, Andres Gomez Ramirez, Igor Pshenichnov, Marco Toppi, Krzysztof Redlich, Thomas Peitzmann, Leo Greiner, Kristjan Gulbrandsen, Christopher Hills, Christine Nattrass, Elena Botta, Ranjit Nayak, Danilo Silva de Albuquerque, Benedetto Di Ruzza, Francesca Bellini, Vladimir Kovalenko, Debasish Das, Yuri Kharlov, Antonio Uras, Domenico Di Bari, LUCINA GABRIELA ESPINOZA BELTRAN, Pranjal Sarma, Mohd Danish Azmi, Johan Alme, Tiziano Virgili, Indranil Das, Andrzej Rybicki, Jeremi Niedziela, Andrea Festanti, Andreas Mathis, Federico Ronchetti, David Silvermyr, Svetlana Ingerman, Victor Riabov, Tahir Hussain, Kai Schweda, Petra Loncar, Jan Figiel, Adrian Sevcenco, Przemyslaw Karczmarczyk, Kenneth Read, Ewa Gładysz-Dziaduś, Ashutosh Kumar Pandey, Francesca Soramel, Thomas Dietel, Vladimir Vechernin, Lukas Nellen, Roman Lavicka, Sang Un Ahn, Mattia Faggin, Paula Fernanda Toledo Matuoka, Catia Maria Annunziata Petta, Nikola Poljak, Ayben Karasu Uysal, Wladyslaw Henryk Trzaska, Vladyslav Litichevskyi, Syaefudin Jaelani, Matteo Lupi, Raimond Snellings, Markus Keil, Guillaume Batigne, Erwann Masson, Nirbhay Kumar Behera, Rafael Peretti Pezzi, Paul Buehler, Andrea Alici, Mikael Mieskolainen, Chinorat Kobdaj, Yury Melikyan, Luciano Ramello, Susanna COSTANZA, Arturo Fernandez Tellez, Dhananjaya Thakur, Marielle Chartier, Sergey Fokin, Roy Lemmon, Samrangy Sadhu, Anisa Khatun, Roberto Barbera, Nicolò Jacazio, Tomasz Trzcinski, Sami Räsänen, Daniele De Gruttola, Piero Giubilato, Marie Germain, Christian Bourjau, Sergey Gorbunov, Gianluca Usai, Marco Van Leeuwen, Giacomo Margagliotti, Somnath Kar, Luca Barioglio, Javier Castillo Castellanos, Federico Cindolo, Enrico Scomparin, Anju Bhasin, Mirosław Kiełbowicz, Petr Závada, Elisa Meninno, Friederike Bock, Adam Kisiel, Christopher Anson, Grigory Feofilov, You Zhou, In-Kwon Yoo, Jun Takahashi, Sandra Moretto, Serpil Yalcin Kuzu, Tomas Vanat, Peter Christiansen, Lucas Altenkämper, Gines Martinez Garcia, Valentina Zaccolo, Mario Rodriguez Cahuantzi, Barbara Guerzoni, Paolo Camerini, Domenico Colella, Lidia Goerlich, Alberto Martín Gago Medina, Marek Kowalski, Otwinowski Jacek, Laurent Aphecetche, Antonio Bianchi, Jose Luis Bazo Alba, Mikhail Zhalov, DEEPIKA JENA, Michael Weber, Dr. Sushanta Tripathy, Sabyasachi Siddhanta, Sean Murray, Kenta Shigaki, Ian Bearden, Małgorzata Janik, Md. Rihan Haque, Rahul Ramachandran Nair, Miguel Arratia, Tasnuva Chowdhury, Chiara Oppedisano, Piotr Gasik, Adela Kravcakova, Marcello Borri, Marcello Lunardon, and Francesco Prino

Subjects
Quantum chromodynamics, Physics, Nuclear and High Energy Physics, Particle physics, Meson, 010308 nuclear & particles physics, Hadron, Perturbative QCD, 01 natural sciences, Charm quark, Baryon, Charmed baryons, 0103 physical sciences, Rapidity, 010306 general physics
Abstract

The p T-differential production cross section of prompt Λ c + charmed baryons was measured with the ALICE detector at the Large Hadron Collider (LHC) in pp collisions at $$ \sqrt{s}=7 $$ s = 7 TeV and in p-Pb collisions at $$ \sqrt{s_{\mathrm{NN}}}=5.02 $$ s N N = 5.02 TeV at midrapidity. The Λ c + and $$ {\overline{\varLambda}}_{\overline{\mathrm{c}}} $$ Λ ¯ c ¯ were reconstructed in the hadronic decay modes Λ c + → pK− π +, Λ c + → pK S 0 and in the semileptonic channel Λ c + → e+ ν e Λ (and charge conjugates). The measured values of the Λ c + /D0 ratio, which is sensitive to the c-quark hadronisation mechanism, and in particular to the production of baryons, are presented and are larger than those measured previously in different colliding systems, centre-of-mass energies, rapidity and p T intervals, where the Λ c + production process may differ. The results are compared with the expectations obtained from perturbative Quantum Chromodynamics calculations and Monte Carlo event generators. Neither perturbative QCD calculations nor Monte Carlo models reproduce the data, indicating that the fragmentation of heavy-flavour baryons is not well understood. The first measurement at the LHC of the Λ c + nuclear modification factor, R pPb, is also presented. The R pPb is found to be consistent with unity and with that of D mesons within the uncertainties, and consistent with a theoretical calculation that includes cold nuclear matter effects and a calculation that includes charm quark interactions with a deconfined medium.

Published
2018

35. Production of deuterons, tritons, He3 nuclei, and their antinuclei in pp collisions at s=0.9 , 2.76, and 7 TeV

Author

Christian Klein-Boesing, Podist Kurashvili, Bernhard Hohlweger, Barbara Trzeciak, Marek Bombara, Diego Stocco, Rinaldo Rui, Łukasz Kamil Graczykowski, Yvonne Pachmayer, Oton Vazquez Doce, Toru Sugitate, Paolo Bartalini, Subhasis Chattopadhyay, Ivan Kisel, Leonid Vinogradov, Jana Crkovska, Janka Vrlakova, Juan Carlos Cabanillas Noris, Zmeskal Johann, Arvind Khuntia, Prabhakar Palni, Jihyun Bhom, Caio Alves Garcia Prado, Jan Hladky, Yaroslav Berdnikov, Christoph Blume, Jussi Viinikainen, Lee Barnby, Alexandre Suaide, Amalia Pop, Anar Rustamov, Alexey Kurepin, Pasquale Di Nezza, Alessandro Feliciello, Dr. Biswarup Paul, Salvatore De Pasquale, Boris Teyssier, Prabhat Ranjan Pujahari, Ketil Røed, Nikolay Zaviyalov, Fabrizio Grosa, Sumit Basu, Mirko Planinic, Jiri A. Mares, Paola Gianotti, Mike Sas, Ashim Roy, Janusz Oleniacz, Yue Shi Lai, Professor David Evans, Davide Pagano, Salvatore Aiola, Ciprian Mihai MITU, Smbat Grigoryan, Sergey Nikolaev, Manoj Bhanudas Jadhav, Andrew Lowe, Claude Pruneau, Leticia Cunqueiro, Maurizio Basile, Borge S Nielsen, Francesca Carnesecchi, Gergely Gábor Barnaföldi, Ramona Lea, Lilit Karayan, Rafael Derradi de Souza, Valery Kondratiev, Fedor Guber, Maximiliano Puccio, Jeremy Wilkinson, Jens-Jorgen Gaardhoje, Mais Suleymanov, Christoph Mayer, Alexander Akindinov, Andres Gomez Ramirez, Igor Pshenichnov, Krzysztof Redlich, Thomas Peitzmann, Leo Greiner, Kristjan Gulbrandsen, Christopher Hills, Christine Nattrass, Elena Botta, Ranjit Nayak, Danilo Silva de Albuquerque, Benedetto Di Ruzza, Francesca Bellini, Vladimir Kovalenko, Debasish Das, Yuri Kharlov, Antonio Uras, Domenico Di Bari, LUCINA GABRIELA ESPINOZA BELTRAN, Pranjal Sarma, Mohd Danish Azmi, Tiziano Virgili, Indranil Das, Andrzej Rybicki, Andrea Festanti, Federico Ronchetti, David Silvermyr, Svetlana Ingerman, Victor Riabov, Tahir Hussain, Kai Schweda, Petra Loncar, Jan Figiel, Adrian Sevcenco, Przemyslaw Karczmarczyk, Kenneth Read, Ewa Gładysz-Dziaduś, Ashutosh Kumar Pandey, Francesca Soramel, Thomas Dietel, Vladimir Vechernin, Lukas Nellen, Roman Lavicka, Sang Un Ahn, Paula Fernanda Toledo Matuoka, Catia Maria Annunziata Petta, Nikola Poljak, Ayben Karasu Uysal, Wladyslaw Henryk Trzaska, Vladyslav Litichevskyi, Syaefudin Jaelani, Eleuterio Spiriti, Matteo Lupi, Raimond Snellings, Markus Keil, Guillaume Batigne, Erwann Masson, Nirbhay Kumar Behera, Rafael Peretti Pezzi, Paul Buehler, Andrea Alici, Mikael Mieskolainen, Satyajit Jena, Chinorat Kobdaj, Luciano Ramello, Susanna COSTANZA, Arturo Fernandez Tellez, Dhananjaya Thakur, Marielle Chartier, Sergey Fokin, Roy Lemmon, Samrangy Sadhu, Anisa Khatun, Roberto Barbera, Nicolò Jacazio, Sami Räsänen, Daniele De Gruttola, Piero Giubilato, Marie Germain, Christian Bourjau, Michele Floris, Sergey Gorbunov, Gianluca Usai, Marco Van Leeuwen, Giacomo Margagliotti, Somnath Kar, Luca Barioglio, Javier Castillo Castellanos, Federico Cindolo, Enrico Scomparin, Anju Bhasin, Fiorella Maria Celeste Fionda, Mirosław Kiełbowicz, Petr Závada, Hector Bello Martinez, Anton Alkin, Roberto Preghenella, Elisa Meninno, Friederike Bock, Adam Kisiel, Christopher Anson, Grigory Feofilov, You Zhou, In-Kwon Yoo, Jun Takahashi, Sandra Moretto, Serpil Yalcin Kuzu, Tomas Vanat, Peter Christiansen, Lucas Altenkämper, Gines Martinez Garcia, Stefano Piano, Valentina Zaccolo, Mario Rodriguez Cahuantzi, Barbara Guerzoni, Paolo Camerini, Cristina Terrevoli, Lidia Goerlich, Przemyslaw Rokita, Alberto Martín Gago Medina, Marek Kowalski, Otwinowski Jacek, Laurent Aphecetche, Antonio Bianchi, Jose Luis Bazo Alba, Mikhail Zhalov, DEEPIKA JENA, Michael Weber, Dr. Sushanta Tripathy, Sabyasachi Siddhanta, Sean Murray, Uzma Tabassam, Kenta Shigaki, Ian Bearden, Małgorzata Janik, Md. Rihan Haque, Rahul Ramachandran Nair, Tasnuva Chowdhury, Chiara Oppedisano, Piotr Gasik, Adela Kravcakova, Marcello Borri, Marcello Lunardon, and Francesco Prino

Subjects
Mass number, Physics, Nuclear reaction, Large Hadron Collider, 010308 nuclear & particles physics, Intersecting Storage Rings, Nuclear Theory, 01 natural sciences, 7. Clean energy, Charged particle, Nuclear physics, Pion, Nuclear magnetic resonance, 0103 physical sciences, High Energy Physics::Experiment, Rapidity, Nuclear Experiment, 010306 general physics, Nucleon
Abstract

Invariant differential yields of deuterons and antideuterons in pp collisions at s = 0.9, 2.76 and 7 TeV and the yields of tritons, He3 nuclei, and their antinuclei at s = 7 TeV have been measured with the ALICE detector at the CERN Large Hadron Collider. The measurements cover a wide transverse momentum (pT) range in the rapidity interval |y

Published
2018

36. Systematic studies of correlations between different order flow harmonics in Pb-Pb collisions at sNN=2.76 TeV

Author

Christian Klein-Boesing, Podist Kurashvili, Bernhard Hohlweger, Barbara Trzeciak, Marek Bombara, Diego Stocco, Rinaldo Rui, Łukasz Kamil Graczykowski, Yvonne Pachmayer, Oton Vazquez Doce, Toru Sugitate, Paolo Bartalini, Subhasis Chattopadhyay, Ivan Kisel, Leonid Vinogradov, Jana Crkovska, Janka Vrlakova, Juan Carlos Cabanillas Noris, Zmeskal Johann, Arvind Khuntia, Prabhakar Palni, Jihyun Bhom, Caio Alves Garcia Prado, Jan Hladky, Yaroslav Berdnikov, Christoph Blume, Jussi Viinikainen, Lee Barnby, Alexandre Suaide, Amalia Pop, Anar Rustamov, Alexey Kurepin, Pasquale Di Nezza, Alessandro Feliciello, Dr. Biswarup Paul, Salvatore De Pasquale, Boris Teyssier, Prabhat Ranjan Pujahari, Ketil Røed, Nikolay Zaviyalov, Fabrizio Grosa, Sumit Basu, Mirko Planinic, Jiri A. Mares, Paola Gianotti, Mike Sas, Ashim Roy, Janusz Oleniacz, Yue Shi Lai, Professor David Evans, Davide Pagano, Salvatore Aiola, Ciprian Mihai MITU, Smbat Grigoryan, Sergey Nikolaev, Manoj Bhanudas Jadhav, Andrew Lowe, Claude Pruneau, Leticia Cunqueiro, Maurizio Basile, Borge S Nielsen, Francesca Carnesecchi, Gergely Gábor Barnaföldi, Ramona Lea, Lilit Karayan, Rafael Derradi de Souza, Valery Kondratiev, Fedor Guber, Maximiliano Puccio, Jeremy Wilkinson, Jens-Jorgen Gaardhoje, Mais Suleymanov, Christoph Mayer, Alexander Akindinov, Andres Gomez Ramirez, Igor Pshenichnov, Krzysztof Redlich, Thomas Peitzmann, Leo Greiner, Kristjan Gulbrandsen, Christopher Hills, Christine Nattrass, Elena Botta, Ranjit Nayak, Danilo Silva de Albuquerque, Benedetto Di Ruzza, Francesca Bellini, Vladimir Kovalenko, Debasish Das, Yuri Kharlov, Antonio Uras, Domenico Di Bari, LUCINA GABRIELA ESPINOZA BELTRAN, Pranjal Sarma, Mohd Danish Azmi, Tiziano Virgili, Indranil Das, Andrzej Rybicki, Andrea Festanti, Federico Ronchetti, David Silvermyr, Svetlana Ingerman, Victor Riabov, Tahir Hussain, Kai Schweda, Petra Loncar, Jan Figiel, Adrian Sevcenco, Przemyslaw Karczmarczyk, Kenneth Read, Ewa Gładysz-Dziaduś, Ashutosh Kumar Pandey, Francesca Soramel, Thomas Dietel, Vladimir Vechernin, Lukas Nellen, Roman Lavicka, Sang Un Ahn, Paula Fernanda Toledo Matuoka, Catia Maria Annunziata Petta, Nikola Poljak, Ayben Karasu Uysal, Wladyslaw Henryk Trzaska, Vladyslav Litichevskyi, Syaefudin Jaelani, Eleuterio Spiriti, Matteo Lupi, Raimond Snellings, Markus Keil, Guillaume Batigne, Erwann Masson, Nirbhay Kumar Behera, Rafael Peretti Pezzi, Paul Buehler, Andrea Alici, Mikael Mieskolainen, Satyajit Jena, Chinorat Kobdaj, Luciano Ramello, Susanna COSTANZA, Arturo Fernandez Tellez, Dhananjaya Thakur, Marielle Chartier, Sergey Fokin, Roy Lemmon, Samrangy Sadhu, Anisa Khatun, Roberto Barbera, Nicolò Jacazio, Sami Räsänen, Daniele De Gruttola, Piero Giubilato, Marie Germain, Christian Bourjau, Michele Floris, Sergey Gorbunov, Gianluca Usai, Marco Van Leeuwen, Giacomo Margagliotti, Somnath Kar, Luca Barioglio, Javier Castillo Castellanos, Federico Cindolo, Enrico Scomparin, Anju Bhasin, Fiorella Maria Celeste Fionda, Mirosław Kiełbowicz, Petr Závada, Hector Bello Martinez, Anton Alkin, Roberto Preghenella, Elisa Meninno, Friederike Bock, Adam Kisiel, Christopher Anson, Grigory Feofilov, You Zhou, In-Kwon Yoo, Jun Takahashi, Sandra Moretto, Serpil Yalcin Kuzu, Tomas Vanat, Peter Christiansen, Lucas Altenkämper, Gines Martinez Garcia, Stefano Piano, Valentina Zaccolo, Mario Rodriguez Cahuantzi, Barbara Guerzoni, Paolo Camerini, Cristina Terrevoli, Lidia Goerlich, Przemyslaw Rokita, Alberto Martín Gago Medina, Marek Kowalski, Otwinowski Jacek, Laurent Aphecetche, Antonio Bianchi, Jose Luis Bazo Alba, Mikhail Zhalov, DEEPIKA JENA, Michael Weber, Dr. Sushanta Tripathy, Sabyasachi Siddhanta, Sean Murray, Uzma Tabassam, Kenta Shigaki, Ian Bearden, Małgorzata Janik, Md. Rihan Haque, Rahul Ramachandran Nair, Tasnuva Chowdhury, Chiara Oppedisano, Piotr Gasik, Adela Kravcakova, Marcello Borri, Marcello Lunardon, and Francesco Prino

Subjects
Physics, 010308 nuclear & particles physics, Elliptic flow, Volume viscosity, 01 natural sciences, 7. Clean energy, Nuclear physics, Amplitude, Harmonics, 0103 physical sciences, Quark–gluon plasma, Harmonic, Boundary value problem, 010306 general physics, Glauber
Abstract

The correlations between event-by-event fluctuations of anisotropic flow harmonic amplitudes have been measured in Pb-Pb collisions at sNN=2.76 TeV with the ALICE detector at the Large Hadron Collider. The results are reported in terms of multiparticle correlation observables dubbed symmetric cumulants. These observables are robust against biases originating from nonflow effects. The centrality dependence of correlations between the higher order harmonics (the quadrangular v4 and pentagonal v5 flow) and the lower order harmonics (the elliptic v2 and triangular v3 flow) is presented. The transverse momentum dependences of correlations between v3 and v2 and between v4 and v2 are also reported. The results are compared to calculations from viscous hydrodynamics and a multiphase transport (AMPT) model calculations. The comparisons to viscous hydrodynamic models demonstrate that the different order harmonic correlations respond differently to the initial conditions and the temperature dependence of the ratio of shear viscosity to entropy density (η/s). A small average value of η/s is favored independent of the specific choice of initial conditions in the models. The calculations with the AMPT initial conditions yield results closest to the measurements. Correlations among the magnitudes of v2, v3, and v4 show moderate pT dependence in midcentral collisions. This might be an indication of possible viscous corrections to the equilibrium distribution at hadronic freeze-out, which might help to understand the possible contribution of bulk viscosity in the hadronic phase of the system. Together with existing measurements of individual flow harmonics, the presented results provide further constraints on the initial conditions and the transport properties of the system produced in heavy-ion collisions.

Published
2018

37. Measurement of the strong interaction induced shift and width of the 1s state of kaonic deuterium at J-PARC

Author

Toshihiko Hiraiwa, G. Beer, H. Tatsuno, Paul Buehler, Haruhiko Outa, Ken Suzuki, Alessandro Scordo, E. Sbardella, O. Vazquez Doce, Kristian Piscicchia, P. Levi Sandri, Massimiliano Bazzi, M. Cargnelli, Johann Zmeskal, Kenta Itahashi, M. Iliescu, I. Tucakovic, Robin Golser, J. Marton, A. d'Uffizi, Y. Sada, Hiroyuki Noumi, Ryugo S. Hayano, M. Poli Lener, M. Iwai, Fuminori Sakuma, M. Sato, T. Ishiwatari, K. Inoue, Hiroaki Ohnishi, Michiko Sekimoto, Makoto Tokuda, S. Ishimoto, Johannes Lachner, Hiroyuki Fujioka, Kyo Tsukada, O. Morra, D. L. Sirghi, F. Ghio, Damir Bosnar, Akihisa Toyoda, Alberto Clozza, Tomofumi Nagae, A. Romero Vidal, Hyoungchan Bhang, Yue Ma, Qi Zhang, L. Busso, Toshimitsu Yamazaki, C. Guaraldo, C. Berucci, T. Yamaga, Florin Sirghi, Shoji Suzuki, Shun Enomoto, D. Faso, Eberhard Widmann, Masahiko Iwasaki, Atsushi Sakaguchi, M. Bragadireanu, Michał Silarski, Yutaka Mizoi, Yasuyuki Matsuda, L. Fabbietti, S. Kawasaki, D. Pietreanu, S. Choi, Shinji Okada, Catalina Curceanu, Paweł Moskal, Hexi Shi, Takatoshi Suzuki, Carlo Fiorini, S. Ajimura, Masami Iio, Kiyoshi Tanida, and T. Hashimoto

Subjects
Physics - Instrumentation and Detectors, Kaonic hydrogen, Strong interaction, Nuclear Theory, FOS: Physical sciences, antikaon–nucleon interaction, low-energy QCD, General Physics and Astronomy, Context (language use), chiral symmetry breaking, kaonic deuterium, Physics and Astronomy (all), sezele, Nuclear physics, Physics and Astronomy (all), Atom, Physics::Atomic Physics, Nuclear Experiment (nucl-ex), Nuclear Experiment, Physics, Quantum chromodynamics, sezele, Instrumentation and Detectors (physics.ins-det), NATURAL SCIENCES. Physics, 3. Good health, PRIRODNE ZNANOSTI. Fizika, Deuterium, Isospin, Chiral symmetry breaking
Abstract

The antikaon-nucleon interaction close to threshold provides crucial information on the interplay between spontaneous and explicit chiral symmetry breaking in low-energy QCD. In this context the importance of kaonic deuterium X-ray spectroscopy has been well recognized, but no experimental results have yet been obtained due to the difficulty of the measurement. We propose to measure the shift and width of the kaonic deuterium 1s state with an accuracy of 60 eV and 140 eV respectively at J-PARC. These results together with the kaonic hydrogen data (KpX at KEK, DEAR and SIDDHARTA at DAFNE) will then permit the determination of values of both the isospin I=0 and I=1 antikaon-nucleon scattering lengths and will provide the most stringent constraints on the antikaon-nucleon interaction, promising a breakthrough. Refined Monte Carlo studies were performed, including the investigation of background suppression factors for the described setup. These studies have demonstrated the feasibility of determining the shift and width of the kaonic deuterium atom 1s state with the desired accuracy of 60 eV and 140 eV., 12 pages, 9 figures

Published
2015

38. Evolution of the longitudinal and azimuthal structure of the near-side jet peak in Pb-Pb collisions at sNN=2.76 TeV

Author

Christian Klein-Boesing, Podist Kurashvili, Marek Bombara, Diego Stocco, Rinaldo Rui, Łukasz Kamil Graczykowski, Yvonne Pachmayer, Toru Sugitate, Paolo Bartalini, Subhasis Chattopadhyay, Ivan Kisel, Leonid Vinogradov, Victor Gonzalez, Jana Crkovska, Janka Vrlakova, Juan Carlos Cabanillas Noris, Zmeskal Johann, Prabhakar Palni, Jihyun Bhom, Caio Alves Garcia Prado, Jan Hladky, Yaroslav Berdnikov, Christoph Blume, Jussi Viinikainen, Lee Barnby, Alexandre Suaide, Amalia Pop, Alexey Kurepin, Pasquale Di Nezza, Laís Pimentel, Dr. Biswarup Paul, Salvatore De Pasquale, Boris Teyssier, Prabhat Ranjan Pujahari, Ketil Røed, Nikolay Zaviyalov, Jovan Milosevic, Sumit Basu, Mirko Planinic, Jiri A. Mares, Paola Gianotti, Mike Sas, Ashim Roy, Janusz Oleniacz, Professor David Evans, Davide Pagano, Salvatore Aiola, Ciprian Mihai MITU, Smbat Grigoryan, Sergey Nikolaev, Andrew Lowe, Claude Pruneau, Leticia Cunqueiro, Borge S Nielsen, Francesca Carnesecchi, Ramona Lea, Lilit Karayan, Renu Bala, Stefania Beole', Rafael Derradi de Souza, Valery Kondratiev, Fedor Guber, Vito Manzari, Maximiliano Puccio, Jeremy Wilkinson, Jens-Jorgen Gaardhoje, Mais Suleymanov, Christoph Mayer, Alexander Akindinov, Andres Gomez Ramirez, Igor Pshenichnov, Krzysztof Redlich, Thomas Peitzmann, Leo Greiner, Kristjan Gulbrandsen, Christine Nattrass, Elena Botta, Ranjit Nayak, Danilo Silva de Albuquerque, Benedetto Di Ruzza, Francesca Bellini, Vladimir Kovalenko, Antonio Ortiz, Debasish Das, Yuri Kharlov, Antonio Uras, Domenico Di Bari, LUCINA GABRIELA ESPINOZA BELTRAN, Arild Velure, Pranjal Sarma, Mohd Danish Azmi, Tiziano Virgili, Jan Čepila, Indranil Das, Andrzej Rybicki, Andrea Festanti, Raphael Tieulent, Federico Ronchetti, David Silvermyr, Victor Riabov, Kai Schweda, Jan Figiel, Adrian Sevcenco, Paolo Giubellino, Kenneth Read, Ewa Gładysz-Dziaduś, Ashutosh Kumar Pandey, Jens Erik Brücken, Francesca Soramel, Thomas Dietel, Vladimir Vechernin, Lukas Nellen, Sang Un Ahn, Elena G. Ferreiro, Catia Maria Annunziata Petta, Nikola Poljak, Ayben Karasu Uysal, Gabriele Gaetano Fronzé, Wladyslaw Henryk Trzaska, Eleuterio Spiriti, Matteo Lupi, Raimond Snellings, Markus Keil, Guillaume Batigne, Nirbhay Kumar Behera, Paul Buehler, Andrea Alici, Mikael Mieskolainen, Satyajit Jena, Michal Sumbera, Chinorat Kobdaj, Luciano Ramello, Arturo Fernandez Tellez, Prakhar Garg, Dhananjaya Thakur, Marielle Chartier, Sergey Fokin, Roy Lemmon, Samrangy Sadhu, Anisa Khatun, Roberto Barbera, Nicolò Jacazio, Sami Räsänen, Michael Winn, Daniele De Gruttola, Piero Giubilato, Marie Germain, Christian Bourjau, Michele Floris, Sergey Gorbunov, Marco Van Leeuwen, Giacomo Margagliotti, Somnath Kar, Javier Castillo Castellanos, Federico Cindolo, Anju Bhasin, Fiorella Maria Celeste Fionda, Petr Závada, Hector Bello Martinez, Anton Alkin, Roberto Preghenella, Elisa Meninno, Friederike Bock, Adam Kisiel, Christopher Anson, Grigory Feofilov, You Zhou, Ivan Ravasenga, Stefano Bagnasco, In-Kwon Yoo, Jun Takahashi, Sandra Moretto, Serpil Yalcin Kuzu, Tomas Vanat, Peter Christiansen, Ken Suzuki, Gines Martinez Garcia, Peter Hristov, Stefano Piano, Ivonne Alicia Maldonado Cervantes, Valentina Zaccolo, Mario Rodriguez Cahuantzi, Barbara Guerzoni, Paolo Camerini, A. J. Rubio-Montero, Cristina Terrevoli, Lidia Goerlich, Alessandro Grelli, Massimo Masera, Alberto Martín Gago Medina, Giacomo Volpe, Marek Kowalski, Otwinowski Jacek, Laurent Aphecetche, Kadri Ozdemir, Mikhail Zhalov, DEEPIKA JENA, Michael Weber, Dr. Sushanta Tripathy, Sabyasachi Siddhanta, Sean Murray, Uzma Tabassam, Kenta Shigaki, Ian Bearden, Małgorzata Janik, Rahul Ramachandran Nair, Piotr Gasik, Adela Kravcakova, Marcello Borri, Marcello Lunardon, and Francesco Prino

Subjects
Physics, Range (particle radiation), 010308 nuclear & particles physics, Star (game theory), Elliptic flow, 01 natural sciences, Nuclear physics, Pseudorapidity, 0103 physical sciences, Rapidity, Impact parameter, Nuclear Experiment, 010306 general physics, Jet quenching, Centrality
Abstract

In two-particle angular correlation measurements, jets give rise to a near-side peak, formed by particles associated to a higher $p_{\mathrm{T}}$ trigger particle. Measurements of these correlations as a function of pseudorapidity ($\Delta\eta$) and azimuthal ($\Delta\varphi$) differences are used to extract the centrality and $p_{\mathrm{T}}$ dependence of the shape of the near-side peak in the $p_{\mathrm{T}}$ range $1 < p_{\mathrm{T}}

Published
2017

39. Anomalous Evolution of the Near-Side Jet Peak Shape in Pb-Pb Collisions at sNN=2.76 TeV

Author

Christian Klein-Boesing, Podist Kurashvili, Marek Bombara, Diego Stocco, Rinaldo Rui, Łukasz Kamil Graczykowski, Yvonne Pachmayer, Toru Sugitate, Paolo Bartalini, Subhasis Chattopadhyay, Ivan Kisel, Leonid Vinogradov, Victor Gonzalez, Jana Crkovska, Janka Vrlakova, Juan Carlos Cabanillas Noris, Zmeskal Johann, Prabhakar Palni, Jihyun Bhom, Caio Alves Garcia Prado, Jan Hladky, Yaroslav Berdnikov, Christoph Blume, Jussi Viinikainen, Lee Barnby, Alexandre Suaide, Amalia Pop, Alexey Kurepin, Pasquale Di Nezza, Laís Pimentel, Dr. Biswarup Paul, Salvatore De Pasquale, Boris Teyssier, Prabhat Ranjan Pujahari, Ketil Røed, Nikolay Zaviyalov, Jovan Milosevic, Sumit Basu, Mirko Planinic, Jiri A. Mares, Paola Gianotti, Mike Sas, Ashim Roy, Janusz Oleniacz, Professor David Evans, Davide Pagano, Salvatore Aiola, Ciprian Mihai MITU, Smbat Grigoryan, Sergey Nikolaev, Andrew Lowe, Claude Pruneau, Leticia Cunqueiro, Borge S Nielsen, Francesca Carnesecchi, Gergely Gábor Barnaföldi, Ramona Lea, Lilit Karayan, Renu Bala, Stefania Beole', Rafael Derradi de Souza, Valery Kondratiev, Fedor Guber, Vito Manzari, Maximiliano Puccio, Jeremy Wilkinson, Jens-Jorgen Gaardhoje, Mais Suleymanov, Christoph Mayer, Alexander Akindinov, Andres Gomez Ramirez, Igor Pshenichnov, Krzysztof Redlich, Thomas Peitzmann, Leo Greiner, Kristjan Gulbrandsen, Christine Nattrass, Elena Botta, Ranjit Nayak, Danilo Silva de Albuquerque, Benedetto Di Ruzza, Francesca Bellini, Vladimir Kovalenko, Antonio Ortiz, Debasish Das, Yuri Kharlov, Antonio Uras, Domenico Di Bari, LUCINA GABRIELA ESPINOZA BELTRAN, Arild Velure, Pranjal Sarma, Mohd Danish Azmi, Tiziano Virgili, Jan Čepila, Indranil Das, Andrzej Rybicki, Andrea Festanti, Raphael Tieulent, Federico Ronchetti, David Silvermyr, Victor Riabov, Kai Schweda, Jan Figiel, Adrian Sevcenco, Paolo Giubellino, Kenneth Read, Ewa Gładysz-Dziaduś, Ashutosh Kumar Pandey, Jens Erik Brücken, Francesca Soramel, Thomas Dietel, Vladimir Vechernin, Lukas Nellen, Sang Un Ahn, Elena G. Ferreiro, Catia Maria Annunziata Petta, Nikola Poljak, Ayben Karasu Uysal, Wladyslaw Henryk Trzaska, Eleuterio Spiriti, Matteo Lupi, Raimond Snellings, Markus Keil, Guillaume Batigne, Nirbhay Kumar Behera, Paul Buehler, Andrea Alici, Mikael Mieskolainen, Satyajit Jena, Michal Sumbera, Chinorat Kobdaj, Luciano Ramello, Arturo Fernandez Tellez, Prakhar Garg, Dhananjaya Thakur, Marielle Chartier, Sergey Fokin, Roy Lemmon, Samrangy Sadhu, Anisa Khatun, Roberto Barbera, Nicolò Jacazio, Sami Räsänen, Michael Winn, Daniele De Gruttola, Piero Giubilato, Marie Germain, Christian Bourjau, Michele Floris, Sergey Gorbunov, Marco Van Leeuwen, Giacomo Margagliotti, Somnath Kar, Javier Castillo Castellanos, Federico Cindolo, Anju Bhasin, Fiorella Maria Celeste Fionda, Petr Závada, Hector Bello Martinez, Anton Alkin, Roberto Preghenella, Elisa Meninno, Friederike Bock, Adam Kisiel, Christopher Anson, Grigory Feofilov, You Zhou, Ivan Ravasenga, Stefano Bagnasco, In-Kwon Yoo, Jun Takahashi, Sandra Moretto, Serpil Yalcin Kuzu, Tomas Vanat, Peter Christiansen, Ken Suzuki, Gines Martinez Garcia, Peter Hristov, Stefano Piano, Ivonne Alicia Maldonado Cervantes, Valentina Zaccolo, Mario Rodriguez Cahuantzi, Barbara Guerzoni, Paolo Camerini, A. J. Rubio-Montero, Cristina Terrevoli, Lidia Goerlich, Alessandro Grelli, Massimo Masera, Alberto Martín Gago Medina, Giacomo Volpe, Marek Kowalski, Otwinowski Jacek, Laurent Aphecetche, Kadri Ozdemir, Mikhail Zhalov, DEEPIKA JENA, Michael Weber, Dr. Sushanta Tripathy, Sabyasachi Siddhanta, Sean Murray, Uzma Tabassam, Kenta Shigaki, Ian Bearden, Małgorzata Janik, Rahul Ramachandran Nair, Piotr Gasik, Adela Kravcakova, Marcello Borri, Marcello Lunardon, and Francesco Prino

Subjects
Physics, 010308 nuclear & particles physics, media_common.quotation_subject, General Physics and Astronomy, 01 natural sciences, Asymmetry, Vertex (geometry), Nuclear physics, Pseudorapidity, 0103 physical sciences, High Energy Physics::Experiment, Rapidity, Center of mass, Impact parameter, Nuclear Experiment, 010306 general physics, Jet quenching, Centrality, media_common
Abstract

The measurement of two-particle angular correlations is a powerful tool to study jet quenching in a $p_{\mathrm{T}}$ region inaccessible by direct jet identification. In these measurements pseudorapidity ($\Delta\eta$) and azimuthal ($\Delta\varphi$) differences are used to extract the shape of the near-side peak formed by particles associated to a higher $p_{\mathrm{T}}$ trigger particle ($1 < p_{\mathrm{T, trig}}

Published
2017

40. Spectroscopic Study of Hyperon Resonace Below \(\bar{K}\)N Threshold via the d(K−, n) Reaction

Author

C. Guaraldo, Johann Marton, M. Sekimoto, O. Morra, Shun Enomoto, M. Poli Lener, Ryugo S. Hayano, J. Zmeskal, Michael Cargnelli, A. Scorde, Haruhiko Outa, B. K. Wuenschek, P. Kienle, Makoto Tokuda, Mario Bragadireanu, K. Inoue, Florin Sirghi, Shinji Okada, M. Iwasaki, Aya Sakaguchi, Akihiro Toyoda, T. Hashimoto, H. Yim, Hiroyuki Noumi, Hiroaki Ohnishi, T. Yamazaki, Paul Buehler, K. Piscicchia, M. Iliescu, S. Ishimoto, H. Kou, Y. Kato, Y. Mizoi, Toshihiko Hiraiwa, Catalina Curceanu, E. Widmann, O. Vazquez Doce, Yasuhiro H. Matsuda, D. Faso, Tomokazu Fukuda, Y. Sada, Y. Fujiwara, K. Tanida, K. Shirotori, S. Ajimura, Masami Iio, Ken Suzuki, D. Tomono, K. Itahashi, Tomofumi Nagae, H. C. Bhang, G. A. Beer, Yue Ma, Fuminori Sakuma, L. Busso, Y. Ishiguro, S. Y. Suzuki, Q. Zhang, T. Suzuki, Hexi Shi, M. Iwai, Masatoshi Sato, T. Ishiwatari, H. Tatsuno, S. Choi, T. Yamaga, T. Ishikawa, Diana Sirghi, A. Romero Vidal, K. Tsukada, S. Kawasaki, and H. Fujioka

Subjects
Physics, 010308 nuclear & particles physics, 0103 physical sciences, Hyperon, Analytical chemistry, 010306 general physics, 01 natural sciences, Bar (unit)
Published
2017

41. Spectroscopic Experiment of Λ(1405) via the In-flight d(K−, n) Reaction at J-PARC K1.8BR

Author

H. C. Bhang, C. Guaraldo, M. Iliescu, M. Sekimoto, Tomokazu Fukuda, T. Hashimoto, S. Ishimoto, Florin Sirghi, E. Widmann, H. Tatsuno, M. Iwasaki, S. Ajimura, T. Suzuki, Masami Iio, S. Choi, T. Yamaga, K. Tanida, Ken Suzuki, Shinji Okada, S. Kawasaki, Makoto Tokuda, Atsushi Sakaguchi, Yue Ma, H. Fujioka, Michael Cargnelli, H. Kou, T. Yamazaki, Mario Bragadireanu, G. A. Beer, Paul Buehler, H. Yim, Tomofumi Nagae, Yuuki Fujiwara, M. Tomono, Haruhiko Outa, Hexi Shi, K. Inoue, Masatoshi Sato, K. Tsukada, Hiroyuki Noumi, S. Y. Suzuki, Akihiro Toyoda, D. Faso, K. Itahashi, D. Pietreanu, L. Busso, T. Ishikawa, Catalina Curceanu, Johann Zmeskal, Y. Sada, K. Shirotori, P. Kienlep, H. Mizoi, Johann Marton, Diana Sirghi, Fuminori Sakuma, Hiroaki Ohnishi, M. Iwai, Q. Zhang, Yasuhiro H. Matsuda, Ryugo S. Hayano, Toshihiko Hiraiwa, K. Yoshida, Shun Enomoto, and O. Morra

Subjects
Physics, Analytical chemistry, J-PARC
Published
2017

42. EXA 2014

Author

Paul Buehler

Published
2017

43. Probing strong interaction with kaonic atoms : from DA$\Phi$NE to J-PARC

Author

Florin Sirghi, C. Guaraldo, R. Golser, Laura Fabbietti, I. Tucakovic, Carolina Berucci, Alessandro Scordo, A. Romero Vidal, Haruhiko Outa, K. Piscicchia, Johann Marton, Mitsuhiro Sato, G. A. Beer, E. Sbardella, D. Bosnar, P. Levi Sandri, Fuminori Sakuma, M. Iwasaki, Johann Zmeskal, Hiroaki Ohnishi, Hexi Shi, F. Ghio, A. d'Uffizi, Catalina Curceanu, Takahiro Hashimoto, Ryugo S. Hayano, M. Bazzi, Diana Sirghi, Paul Buehler, Mario Bragadireanu, O. Vazquez Doce, Shinji Okada, Paweł Moskal, K. Itahashi, D. Pietreanu, E. Widmann, Michael Cargnelli, Carlo Fiorini, Alberto Clozza, Kunio Suzuki, M. Poli Lener, and M. Iliescu

Subjects
Nuclear physics, Physics, Strong interaction, J-PARC
Published
2017

44. SiΛvio: A trigger for Λ-hyperons

Author

Z. Fodor, A. Lebedev, K. Siwek-Wilczyńska, Xavier Bernard Lopez, P. Koczon, Z. Basrak, Xiang Yang Zhang, Vladislav Manko, K. Wiśniewski, Fouad Rami, Mihai Petrovici, K. Suzuki, Anton Andronic, T. Yamazaki, W. Reisdorf, Valerie Ramillien Barret, P. Gasik, I. Carevic, T. I. Kang, Eberhard Widmann, J. L. Liu, Y. Leifels, Byung-Sik Hong, A. Zhilin, Paul Kienle, P. Schmidt, A. Reischl, K. S. Sim, Johann Marton, Pascal Dupieux, Y. Grishkin, O. N. Hartmann, V. Charviakova, Ralf Peter Averbeck, Z. Tyminski, N. Herrmann, K. D. Hildenbrand, J. Zmeskal, Igor Gašparić, J. Kecskemeti, M. Kirejczyk, M. Berger, R. H. Munzer, B. Sikora, Paul Buehler, Nicole Bastid, Z. Seres, I. Deppner, Krzysztof Piasecki, A. Schüttauf, R. Čaplar, M. Dželalija, M. Kiš, V. T. Smolyankin, M. S. Ryu, Michael Cargnelli, Zhigang Xiao, Yongsun Kim, M. L. Benabderrahmane, P. Wagner, R. Kotte, V. Simion, T. Matulewicz, P. Crochet, V. Zinyuk, Laura Fabbietti, and I. E. Yushmanov

Subjects
Physics, silicon, Mesytec, APV25, MIPS, Λ, trigger, Nuclear and High Energy Physics, Silicon, Spectrometer, 010308 nuclear & particles physics, Detector, Hyperon, chemistry.chemical_element, Lambda-hyperons, 01 natural sciences, Vertex (geometry), Nuclear physics, Si Lambda vio, chemistry, 0103 physical sciences, 010306 general physics, Instrumentation
Abstract

As online trigger for events containing Λ hyperons in p+p collisions at 3.1 GeV a silicon-based device has been designed and built. This system has been integrated close to the target region within the FOPI spectrometer at GSI and was also employed as a tracking device to improve the vertex reconstruction of secondary decays. The design of the detector components, read-out, the trigger capability as well as the tracking performance are presented. An enrichment factor of about 14 was achieved for events containing a Λ-hyperon candidate.

Published
2014

45. Search for deeply bound Kaonic nuclear states via3He(K-, n) reaction at J-PARC

Author

D. Tomono, H. Tatsuno, S. Ishimoto, Akihiro Toyoda, Makoto Tokuda, Alessandro Scordo, M. Iwasaki, Yue Ma, K. Itahashi, Shinji Okada, L. Busso, Florin Sirghi, Hiroaki Ohnishi, K. Tsukada, T. Yamazaki, Haruhiko Outa, Michael Cargnelli, K. Inoue, T. Hashimoto, Mario Bragadireanu, Tomofumi Nagae, Hiroyuki Noumi, Paul Buehler, M. Iliescu, H. Kou, Y. Kato, C. Guaraldo, S. Y. Suzuki, P. Kienle, T. Ishiwatari, Diana Sirghi, G. A. Beer, M. Sekimoto, Y. Sada, O. Vazquez Doce, Y. Ishiguro, Fuminori Sakuma, E. Widmann, O. Morra, Catalina Curceanu, Johann Marton, T. Ishikawa, M. Iwai, Johann Zmeskal, Ken Suzuki, S. Ajimura, Masami Iio, M. Poli Lener, T. Suzuki, Aya Sakaguchi, H. Yim, S. Kawasaki, Tomokazu Fukuda, Y. Mizoi, Hiroyuki Fujioka, Y. Fujiwara, A. Romero Vidal, B. K. Wuenschek, K. Tanida, H. C. Bhang, S. Choi, Shun Enomoto, T. Yamaga, Hexi Shi, Masatoshi Sato, K. Piscicchia, Q. Zhang, Yasuhiro H. Matsuda, D. Faso, Toshihiko Hiraiwa, and Ryugo S. Hayano

Subjects
Nuclear physics, Physics, Bound state, J-PARC
Published
2014

46. A search for deeply-bound kaonic nuclear states by in-flight 3He(K-, N) reaction at J-PARC

Author

Hiroaki Ohnishi, Catalina Curceanu, Diana Sirghi, Michael Cargnelli, J. Zmeskal, T. Ishiwatari, Makoto Tokuda, Toshihiko Hiraiwa, Hexi Shi, Tomofumi Nagae, K. Piscicchia, O. Morra, Masatoshi Sato, Mario Bragadireanu, S. Kawasaki, K. Tsukada, D. Faso, Fuminori Sakuma, M. Poli Lener, H. Tatsuno, T. Hashimoto, Paul Buehler, Ryugo S. Hayano, L. Busso, T. Yamaga, Kiyoshi Tanida, Y. Kato, O. Vazquez Doce, Akihiro Toyoda, S. Choi, Kenta Itahashi, Paul Kienle, C. Guaraldo, Q. Zhang, Alessandro Scordo, H. Yim, M. Iliescu, Y. Sada, A. Romero Vidal, Shun Enomoto, M. Sekimoto, Yasuyuki Matsuda, Ken Suzuki, Johann Marton, B. K. Wuenschek, T. Ishikawa, Eberhard Widmann, S. Ishimoto, G. A. Beer, Masahiko Iwasaki, Hiroyuki Fujioka, Florin Sirghi, S. Ajimura, Masami Iio, Tomokazu Fukuda, Y. Fujiwara, Hyoungchan Bhang, H. Kou, Haruhiko Outa, Atsushi Sakaguchi, Yutaka Mizoi, K. Inoue, Hiroyuki Noumi, M. Iwai, D. Tomono, Shinji Okada, Yue Ma, T. Yamazaki, Y. Ishiguro, T. Suzuki, and S. Y. Suzuki

Subjects
Nuclear physics, Physics, General Physics and Astronomy, J-PARC
Published
2014

47. A search for deeply-bound kaonic nuclear state at the J-PARC E15 experiment

Author

A. Romero Vidal, Yasuyuki Matsuda, Hexi Shi, Yutaka Mizoi, Masatoshi Sato, Johann Marton, Y. Sada, C. Guaraldo, G. A. Beer, Alessandro Scordo, T. Hashimoto, K. Inoue, Catalina Curceanu, S. Kawasaki, Shinji Okada, Florin Sirghi, Shun Enomoto, Paul Buehler, Hiroaki Ohnishi, L. Busso, Paul Kienle, Hiroyuki Fujioka, Haruhiko Outa, S. Choi, Tomokazu Fukuda, Mario Bragadireanu, H. Tatsuno, T. Yamazaki, Akihiro Toyoda, D. Faso, O. Vazquez Doce, Eberhard Widmann, Michiko Sekimoto, Tomofumi Nagae, Hyoungchan Bhang, Masahiko Iwasaki, K. Piscicchia, Fuminori Sakuma, O. Morra, S. Ishimoto, D. Tomono, Makoto Tokuda, M. Poli Lener, Hiroyuki Noumi, T. Ishikawa, Johann Zmeskal, Y. Ishiguro, S. Ajimura, Masami Iio, T. Ishiwatari, Atsushi Sakaguchi, Diana Sirghi, Yue Ma, H. Kou, T. Suzuki, Ken Suzuki, M. Iwai, H. Yim, S. Y. Suzuki, Yuuki Fujiwara, M. Iliescu, Kyo Tsukada, Toshihiko Hiraiwa, Ryugo S. Hayano, Michael Cargnelli, and K. Itahashi

Subjects
Physics, Nuclear physics, Nuclear and High Energy Physics, Particle physics, Proton, Nuclear state, Bound state, Neutron, Invariant mass, J-PARC
Abstract

The J-PARC E15 experiment will be performed to search for the simplest kaonic nuclear bound state, K ¯ N N , by the in-flight He 3 ( K − , N ) reaction. The exclusive measurement will be performed by a simultaneous measurement of the missing mass using the forward neutron or proton, and the invariant mass via the expected decay, e.g. K − p p → Λ p → p π − p . In this report, an overview of the experiment and an analysis of engineering runs performed in February and June are presented.

Published
2013

48. Study of the elementary (K-, n) reactions to search for the K NN bound state via the3He (K-, n) reaction at J-PARC

Author

A. Romero Vidal, S. Kawasaki, H. Fujioka, H. Kou, K. Itahashi, Koki Kanno, Fuminori Sakuma, Shinji Okada, D. Faso, Florin Sirghi, Tomofumi Nagae, Hiroaki Ohnishi, T. Yamazaki, T. Kim, D. Sirghi, Y. Kato, Y. Ishiguro, C. Guaraldo, Yue Ma, G. A. Beer, K. Inoue, H. Outa, Alessandro Scordo, Catalina Curceanu, T. Hashimoto, Michael Cargnelli, Hiroyuki Noumi, M. Sekimoto, T. Suzuki, J. Marton, Shigeru Ishimoto, T. Ishiwatari, Y. Sada, M. Iwai, Akihiro Toyoda, L. Busso, S. Y. Suzuki, S. Ajimura, Masami Iio, D. Tomono, Atsushi Sakaguchi, H. Tatsuno, M. Iliescu, Makoto Tokuda, Ken Suzuki, Paul Buehler, K. Kato, M. Bragadireanu, O. Vazquez Doce, Tomokazu Fukuda, Y. Fujiwara, H. C. Bhang, Yutaka Mizoi, Carolina Berucci, H. Yim, Toshihiko Hiraiwa, Hexi Shi, Ryugo S. Hayano, Kotaro Shirotori, M. Iwasaki, S. Choi, Q. Zhang, M. Sato, T. Yamaga, Kiyoshi Tanida, Shun Enomoto, E. Widmann, T. Ishikawa, Johann Zmeskal, B. K. Wuenschek, K. Tsukada, O. Morra, K. Piscicchia, Yasuhiro H. Matsuda, and Paul Kienle

Subjects
Physics, Deuterium, Hydrogen, chemistry, Yield (chemistry), Hadron, Bound state, Elementary reaction, Physical chemistry, chemistry.chemical_element, Neutron, Atomic physics, Helium
Abstract

We have searched for the simplest kaonic nuclear state, KNN, using the in-flight 3He (K-, n) reaction at the J-PARC hadron experimental facility. In the semi-inclusive neutron missing-mass spectrum at θnlab=0°, an excess of yield was observed just below the K- pp mass-threshold, which cannot be explained by any elementary reactions [PTEP 2015, 061D01]. To understand the missing-mass spectrum of 3He (K-, n) X, we investigated the elementary (K-, n) reactions using hydrogen and deuterium targets. The p (K-, n) X missing-mass spectrum was well described by the charge-exchange reaction. However, in the d (K-, n) X spectrum, we observed an excess of yield just below the K- p mass-threshold, which was similar to that in the 3He (K-, n) X spectrum. (Less)

Published
2016

49. Strange meson production in Al plus Al collisions at 1.9 AGeV

Author

K. S. Sim, Michael Cargnelli, Fouad Rami, Jianli Liu, I. M. Deppner, J. Zmeskal, Xavier Bernard Lopez, P. Koczon, K. Wiśniewski, Byung-Sik Hong, Anton Andronic, R. Čaplar, Y. Leifels, I. Weber, Vladislav Manko, Peter Wagner, Paul Buehler, I. E. Yushmanov, V. Simion, Pascal Dupieux, O. Czerwiakowa, Mihai Petrovici, Ralf Peter Averbeck, A. Lebedev, Z. Basrak, A. Zhilin, P. Crochet, V. T. Smolyankin, K. Suzuki, T. I. Kang, Johann Marton, T. Matulewicz, M. Berger, M. S. Ryu, E. Widmann, Laura Fabbietti, Z. Fodor, R. Kotte, Z. Seres, M. L. Benabderrahmane, N. Herrmann, K. D. Hildenbrand, A. Le Fèvre, P. Schmidt, O. N. Hartmann, A. Schüttauf, V. Zinyuk, Y. Grishkin, B. Sikora, M. Kirejczyk, M. Kiš, R. H. Munzer, Nicole Bastid, Zhigang Xiao, Yongsun Kim, Krzysztof Piasecki, K. Siwek-Wilczyńska, W. Reisdorf, Piotr Jan Gasik, Y. H. Zhang, Z. Tyminski, M. Dželalija, Igor Gašparić, J. Kecskemeti, Valerie Ramillien Barret, A. Reischl, Laboratoire de Physique de Clermont (LPC), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS)-Université Clermont Auvergne (UCA), Institut Pluridisciplinaire Hubert Curien (IPHC), Université de Strasbourg (UNISTRA)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), FOPI, Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Clermont Auvergne (UCA)-Centre National de la Recherche Scientifique (CNRS), Université de Strasbourg (UNISTRA)-Centre National de la Recherche Scientifique (CNRS), Laboratoire de Physique Corpusculaire - Clermont-Ferrand (LPC), Université Blaise Pascal - Clermont-Ferrand 2 (UBP)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Université de Strasbourg (UNISTRA)-Université de Haute-Alsace (UHA) Mulhouse - Colmar (Université de Haute-Alsace (UHA))-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Laboratoire de Physique de Clermont ( LPC ), Institut National de Physique Nucléaire et de Physique des Particules du CNRS ( IN2P3 ) -Université Clermont Auvergne ( UCA ) -Centre National de la Recherche Scientifique ( CNRS ), Institut Pluridisciplinaire Hubert Curien ( IPHC ), and Centre National de la Recherche Scientifique ( CNRS ) -Université de Strasbourg ( UNISTRA )

Subjects
Nuclear and High Energy Physics, Meson production, Meson, Nuclear Theory, FOS: Physical sciences, Inverse, threshold: production, heavy-ion collisions, sis energies, antikaon production, kaon production, detector, matter, fopi, anisotropy, [PHYS.NEXP]Physics [physics]/Nuclear Experiment [nucl-ex], Kinetic energy, K+, 01 natural sciences, 7. Clean energy, K: yield, K, beam: energy, Nuclear physics, 0103 physical sciences, transport theory, Nuclear Experiment (nucl-ex), [ PHYS.NEXP ] Physics [physics]/Nuclear Experiment [nucl-ex], 010306 general physics, Anisotropy, Nuclear Experiment, Line (formation), Physics, energy: kinetic, 010308 nuclear & particles physics, Phi(1020), nucleus nucleus: scattering, meson: decay, Yield (chemistry), K: production, aluminum, slope, Production (computer science), High Energy Physics::Experiment, strange meson: production
Abstract

The production of K$^+$, K$^-$ and $\varphi$(1020) mesons is studied in Al+Al collisions at a beam energy of 1.9A GeV which is close or below the production threshold in NN reactions. Inverse slopes, anisotropy parameters, and total emission yields of K$^{\pm}$ mesons are obtained. A comparison of the ratio of kinetic energy distributions of K$^-$ and K$^+$ mesons to the HSD transport model calculations suggests that the inclusion of the in-medium modifications of kaon properties is necessary to reproduce the ratio. The inverse slope and total yield of $\phi$ mesons are deduced. The contribution to K$^-$ production from $\phi$ meson decays is found to be [17 $\pm$ 3 (stat) $^{+2}_{-7}$ (syst)] %. The results are in line with previous K$^{\pm}$ and $\phi$ data obtained for different colliding systems at similar incident beam energies., Comment: 16 pages, 11 figures

Published
2016

50. Centrality dependence of subthreshold $\phi$ meson production in Ni + Ni collisions at 1.9A GeV

Author

Xavier Bernard Lopez, P. Koczon, Byung-Sik Hong, Anton Andronic, Fouad Rami, Johann Marton, R. Kotte, D. Pelte, O. N. Hartmann, Piotr Jan Gasik, A. Mangiarotti, N. Herrmann, Igor Gašparić, A. Le Fèvre, K. D. Hildenbrand, Y. Leifels, J. Kecskemeti, K. S. Sim, Y. H. Zhang, E. Cordier, Michael Cargnelli, M. Merschmeyer, M. L. Benabderrahmane, E. Widmann, V. Zinyuk, Valerie Ramillien Barret, M. Berger, J. Zmeskal, Gabriel Stoicea, Z. Fodor, I. Weber, B. Sikora, Zhigang Xiao, Z. Seres, A. Reischl, Mihai Petrovici, Laura Fabbietti, Yongsun Kim, Ralf Peter Averbeck, W. Reisdorf, Peter Wagner, Paul Buehler, P. Schmidt, Z. Tyminski, M. Kiš, K. Suzuki, M. Dželalija, P. Crochet, K. Wiśniewski, Pascal Dupieux, T. I. Kang, O. Czerwiakowa, Z. Basrak, Jianli Liu, M. Korolija, I. M. Deppner, A. Lebedev, R. H. Munzer, Nicole Bastid, V. Simion, T. Matulewicz, Krzysztof Piasecki, K. Siwek-Wilczyńska, I. E. Yushmanov, A. Schüttauf, R. Čaplar, M. Kirejczyk, H. S. Xu, Y. Grishkin, V. T. Smolyankin, M. S. Ryu, Vladislav Manko, A. Zhilin, Laboratoire de Physique de Clermont ( LPC ), Institut National de Physique Nucléaire et de Physique des Particules du CNRS ( IN2P3 ) -Université Clermont Auvergne ( UCA ) -Centre National de la Recherche Scientifique ( CNRS ), Institut Pluridisciplinaire Hubert Curien ( IPHC ), Centre National de la Recherche Scientifique ( CNRS ) -Université de Strasbourg ( UNISTRA ), FOPI, Laboratoire de Physique de Clermont (LPC), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Clermont Auvergne (UCA)-Centre National de la Recherche Scientifique (CNRS), Institut Pluridisciplinaire Hubert Curien (IPHC), Université de Strasbourg (UNISTRA)-Centre National de la Recherche Scientifique (CNRS), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS)-Université Clermont Auvergne (UCA), Université de Strasbourg (UNISTRA)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Laboratoire de Physique Corpusculaire - Clermont-Ferrand (LPC), Université Blaise Pascal - Clermont-Ferrand 2 (UBP)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), and Université de Strasbourg (UNISTRA)-Université de Haute-Alsace (UHA) Mulhouse - Colmar (Université de Haute-Alsace (UHA))-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS)

Subjects
Particle physics, heavy ion: scattering, Meson, Strangeness, [PHYS.NEXP]Physics [physics]/Nuclear Experiment [nucl-ex], Kinetic energy, 01 natural sciences, K-: production, beam: energy, Nuclear physics, 25.75.Dw, 0103 physical sciences, [ PHYS.NEXP ] Physics [physics]/Nuclear Experiment [nucl-ex], 010306 general physics, Power function, Nuclear Experiment, impact parameter, Physics, energy: kinetic, 010308 nuclear & particles physics, Phi meson, Phi(1020): multiplicity, Phi(1020): production, Exponent, FOPI, High Energy Physics::Experiment, spectrometer, Impact parameter, Centrality, 13.60.Le
Abstract

We analysed the $\phi$ meson production in central Ni+Ni collisions at the beam kinetic energy of 1.93A GeV with the FOPI spectrometer and found the production probability per event of $[8.6 ~\pm~ 1.6 ~(\text{stat}) \pm 1.5 ~(\text{syst})] \times 10^{-4}$. This new data point allows for the first time to inspect the centrality dependence of the subthreshold $\phi$ meson production in heavy-ion collisions. The rise of $\phi$ meson multiplicity per event with mean number of participants can be parameterized by the power function with exponent $\alpha = 1.8 \pm 0.6$. The ratio of $\phi$ to $\text{K}^-$ production yields seems not to depend within the experimental uncertainties on the collision centrality, and the average of measured values was found to be $0.36 \pm 0.05$., Comment: 9 pages, 5 figures

Published
2016

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